{"title":"Compressors","description":"\u003cp\u003eRSE Audio analog compressors are designed for recording, mixing and mastering applications. The range includes tube, optical and vari-mu compressors in 19-inch and 500-series formats, offering different approaches to gain reduction, coloration and dynamic control. Every unit is manually assembled, calibrated and tested.\u003c\/p\u003e","products":[{"product_id":"stereo-variable-gain-vari-mu-compressor-rse-vmu-1","title":"RSE VMU-1 Stereo Vari-Mu Tube Compressor","description":"\u003cdiv\u003e\n\u003cp\u003eThe RSE VMU-1 is a dual-channel all-tube vari-mu compressor designed for stereo bus, mastering, and program compression.\u003c\/p\u003e\n\u003cp\u003eEach channel uses a fully balanced tube signal path with transformer-coupled input and output. The standard version uses six vacuum tubes across the two channels, while the version with analog MIX control uses ten. Both versions employ six transformers in total, providing transformer-coupled inputs and outputs while maintaining a fully balanced tube signal path throughout the gain-reduction circuitry.\u003c\/p\u003e\n\u003cp\u003eAttack and release are independently selectable, and a four-position sidechain high-pass filter allows low-frequency content to have less influence on gain reduction. The two compressor channels can operate independently or be linked for stereo processing.\u003c\/p\u003e\n\u003cp\u003eThe optional MIX version adds parallel compression directly in the analog signal path.\u003c\/p\u003e\n\u003cp\u003eThe VMU-1 is suitable for applications ranging from subtle stereo-bus control to more pronounced gain reduction, while retaining direct control over attack, release, ratio, and detector response.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003eDual-channel all-tube vari-mu compressor\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eFully balanced tube signal path\u003c\/li\u003e\n\u003cli\u003eTransformer-coupled inputs and outputs\u003c\/li\u003e\n\u003cli\u003eSix vacuum tubes in the standard version\u003c\/li\u003e\n\u003cli\u003eTen vacuum tubes in the version with analog MIX control\u003c\/li\u003e\n\u003cli\u003eIndependent Gain, Threshold, Ratio and Output controls\u003c\/li\u003e\n\u003cli\u003eStepped controls for repeatable settings\u003c\/li\u003e\n\u003cli\u003eFour selectable attack times\u003c\/li\u003e\n\u003cli\u003eFour selectable release times\u003c\/li\u003e\n\u003cli\u003eSidechain HPF: Flat \/ 60 Hz \/ 120 Hz \/ 240 Hz\u003c\/li\u003e\n\u003cli\u003eStereo Link or independent dual-mono operation\u003c\/li\u003e\n\u003cli\u003eUp to approximately 20 dB of gain reduction\u003c\/li\u003e\n\u003cli\u003eOptional analog MIX control for parallel compression\u003c\/li\u003e\n\u003cli\u003eRelay-switched true bypass on both channels\u003c\/li\u003e\n\u003cli\u003eAnalog gain-reduction meters\u003c\/li\u003e\n\u003cli\u003e3U 19-inch rack format\u003c\/li\u003e\n\u003cli\u003eFactory-configured 100–120 V or 200–240 V mains versions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eRack-mounting ears and a power cord are included.\u003c\/p\u003e\n\u003ch2\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003ch1\u003e\u003cspan\u003eVideo reviews from experts\u003c\/span\u003e\u003c\/h1\u003e\n\u003ch2\u003eInstant ANALOG Mojo: RSE VMU-1 by MixbusTv\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e“This behemoth is a true all-tube, dual-mono stereo vari-mu mastering compressor — borderline impossible to make it sound bad.” \u003c\/strong\u003e\u003cem\u003e(0:56–1:03)\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e“When you run material through it, it stays faithful to the source and yet adds this sheen and polish.” \u003c\/strong\u003e\u003cem\u003e(1:22–1:30)\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e“The harmonic collection is always extremely balanced — you will not hear a hype in the top end or a hype on the low end.” \u003c\/strong\u003e\u003cem\u003e(1:40–1:49)\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e“By pushing the gain up to +21 dB, you get that tube and transformer glow, but still almost invisible compression — no pumping at all.” \u003c\/strong\u003e\u003cem\u003e(5:00–5:10)\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e“That vari-mu nature makes it insanely musical — you sculpt dynamics like with a classic ’60s tube unit.” \u003c\/strong\u003e\u003cem\u003e(6:18–6:27)\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e“On vocals, it thickens the sound and tames the harsh top-end without losing presence or intelligibility.” \u003c\/strong\u003e\u003cem\u003e(20:38–21:11)\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e“Even on very bright female vocals, it smooths sibilance perfectly while keeping clarity.” \u003c\/strong\u003e\u003cem\u003e(22:02–22:11)\u003c\/em\u003e\u003cem\u003e\u003c\/em\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/i5olB4QKk-c?autoplay=1\u0026amp;mute=1\" title=\"YouTube video player\"\u003e\n\u003c\/iframe\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eANALOG Vibe: RSE VMU-1 by Mixing Music Analog\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e“It’s six tubes—three per channel—and three transformers per channel, truly all-tube, all-transformer signal path.” \u003c\/strong\u003e\u003cem\u003e(1:53–2:02)\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003e\u003c\/em\u003e\u003cstrong style=\"font-size: 0.875rem;\"\u003e\u003c\/strong\u003e\u003cem\u003e\u003c\/em\u003e\u003cem\u003e\u003c\/em\u003e\u003cem\u003e\u003c\/em\u003e\u003cem\u003e\u003c\/em\u003e\u003cem\u003e\u003c\/em\u003e\u003cstrong\u003e“Every control is military-grade stepped—no pots—so dialing in for mastering is step-perfect and repeatable.” \u003c\/strong\u003e\u003cem\u003e(2:50–3:00)\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003e\u003c\/em\u003e\u003cstrong\u003e“Instant thickness in the low end—Fairchild-esque richness and creamy glue on acoustic guitars.” \u003c\/strong\u003e\u003cem\u003e(8:06–8:14)\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cem\u003e\u003c\/em\u003e\u003cem\u003e\u003c\/em\u003e\u003cstrong\u003e“About 25–28 % compression is realistic—warm and fat bottom end, sparkle on top without brittleness.” \u003c\/strong\u003e\u003cem\u003e(9:41–9:49) \u003c\/em\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cem\u003e\u003c\/em\u003e\u003cem\u003e\u003c\/em\u003e\u003cstrong\u003e“Unlinking channels opens the stereo field gently, giving just a touch more width.”  \u003c\/strong\u003e\u003cem\u003e(10:44–10:51)\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cem\u003e\u003c\/em\u003e\u003cstrong\u003e“On drums, kick is tight with sustain on the snare—rounded but still punchy and musical.”  \u003c\/strong\u003e\u003cem\u003e(10:44–10:51)\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cem\u003e\u003c\/em\u003e\u003cstrong\u003e“With a 240 Hz side-chain, dance tracks get warmth and thickness without mudding the sub-bass.” \u003c\/strong\u003e\u003cem\u003e(18:16–18:24)\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cem\u003e\u003c\/em\u003e\u003cstrong\u003e“For under $3 K, this is the most adjustable V-Mu hardware compressor out there—rivals $5 K units.” \u003c\/strong\u003e\u003cem\u003e(18:55–19:03)\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/S6MupeQhbKQ?autoplay=1\u0026amp;mute=1\u0026amp;loop=1\u0026amp;playlist=S6MupeQhbKQ\" title=\"YouTube video player\"\u003e\n\u003c\/iframe\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"RSE Audio","offers":[{"title":"With MIX control","offer_id":46224616620132,"sku":null,"price":2600.0,"currency_code":"USD","in_stock":true},{"title":"Without MIX control","offer_id":46224616652900,"sku":null,"price":2400.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0594\/1424\/9572\/files\/DSC_6270.jpg?v=1752684088"},{"product_id":"500-series-tube-preamp-with-optical-compression-rse-pc-502","title":"500 Series tube preamp with optical compression RSE PC 502","description":"\u003cp\u003eThis device is unique thanks to its architecture, its transformers and our irrepressible desire to make a device that would finally solve the problem of a truly high quality tube preamp with an optical compressor in the 500 series format. In this model we introduced a supplementary amplification stage, source follower cascades on FET transistor, and output stage based on the low-noise opamp, which made it possible to equip the device with a compressor circuit and extra low noise. Thus, gain is obtained with traditional tube amplifier stages in cascade. As a result, you can enjoy the full-bodied sound of a tube amplifier.\u003cbr\u003e\u003cbr\u003eCompressor parameters can be adjusted using the compression character switch (soft\/hard) and the compressor threshold knob. To be able to compensate for the attenuation of the signal after compression, the device has an output signal level knob. And to monitor the operation of the device, it is equipped with LED indicators of the output signal level and the gain reduction level.\u003cbr\u003eThe device has a power on\/off feature, that lets user optimize the overal rack power consu,tion.\u003cbr\u003eThese features make the PC502 the most versatile device in our collection.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePreamp section:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMic. input impedance: 500Ω\/2k\u003cspan data-mce-fragment=\"1\"\u003eΩ\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eMax gain: +72dB\u003c\/li\u003e\n\u003cli\u003eHi-Zinput impedance: 1M\u003cspan data-mce-fragment=\"1\"\u003eΩ\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eFrequency range: 20Hz-20kHz (+\/-1.5dB)\u003c\/li\u003e\n\u003cli\u003eInput\/Output type: Balanced (transformers)\u003c\/li\u003e\n\u003cli\u003eAmplifying element: Hybrid\u003c\/li\u003e\n\u003cli\u003ePower consumption: 320mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCompressor (soft mode):\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRatio: ~ 5\/1, soft knee\u003c\/li\u003e\n\u003cli\u003eAttak time: ~ 200ms\u003c\/li\u003e\n\u003cli\u003eRelease time: ~ 1000ms \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCompressor (hard mode):\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRatio: ~ 20\/1, soft knee\u003c\/li\u003e\n\u003cli\u003eAttak time: ~ 5ms\u003c\/li\u003e\n\u003cli\u003eRelease time: ~ 2000ms\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"attributes-list__row\" data-v-19bacde8=\"\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"attributes-list__row\" data-v-19bacde8=\"\"\u003e\n\u003ciframe src=\"https:\/\/w.soundcloud.com\/player\/?url=https%3A\/\/api.soundcloud.com\/playlists\/1123458406\u0026amp;color=%23ff5500\u0026amp;auto_play=false\u0026amp;hide_related=false\u0026amp;show_comments=true\u0026amp;show_user=true\u0026amp;show_reposts=false\u0026amp;show_teaser=true\" height=\"450\" width=\"100%\" allow=\"autoplay\" frameborder=\"no\" scrolling=\"no\"\u003e\u003c\/iframe\u003e\n\u003cdiv style=\"font-size: 10px; color: #cccccc; line-break: anywhere; word-break: normal; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; font-family: Interstate,Lucida Grande,Lucida Sans Unicode,Lucida Sans,Garuda,Verdana,Tahoma,sans-serif; font-weight: 100;\"\u003e\n\u003ca style=\"color: #cccccc; text-decoration: none;\" title=\"RSE Audio\" href=\"https:\/\/soundcloud.com\/rse-audio\" target=\"_blank\"\u003eRSE Audio\u003c\/a\u003e · \u003ca style=\"color: #cccccc; text-decoration: none;\" title=\"500Series tube preamp with optical compression test recording\" href=\"https:\/\/soundcloud.com\/rse-audio\/sets\/500series-tube-preamp-with-optical-compression-test-recording\" target=\"_blank\"\u003e500Series tube preamp with optical compression test recording\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"RSE Audio","offers":[{"title":"ECC81","offer_id":42237044719716,"sku":"","price":550.0,"currency_code":"USD","in_stock":true},{"title":"6N1P","offer_id":42237044785252,"sku":"","price":525.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0594\/1424\/9572\/files\/PC502_1.png?v=1697118244"},{"product_id":"500-series-tube-optical-compressor-rse-tc505","title":"500 Series tube\u0026optical compressor RSE TC505","description":"\u003cp\u003eThe TC505 is an extraordinary piece of equipment that stands out from the rest. What sets this 500 series compressor apart is its inclusion of two compression elements within a single unit. This innovative design allows users to effortlessly switch between tube (vari mu) and optical compression, offering two distinct characters in one compact body.\u003cbr\u003e\u003cbr\u003eWith switchable attack and release times, ratio, and a smooth threshold control, the TC505 provides unparalleled flexibility in shaping your desired compression effect. Whether you prefer the softeness of tube compression or the transparency and precision of optical compression, this module has got you covered.\u003cbr\u003e\u003cbr\u003eBoth compression modes feature a soft knee characteristic, ensuring seamless and transparent compression even in more aggressive settings. Furthermore, the incorporation of tube and input\/output transformers enriches the signal with harmonics, adding depth and character to your audio. The balanced schematic not only enhances sensitivity to low interferences but also minimizes distortions for pristine sound quality.\u003cbr\u003e\u003cbr\u003eAdditionally, the TC505 boasts a convenient link channels feature (pin 6), enabling the connection of multiple modules to create a multiple channel operating setup. This versatility makes it an ideal choice for professionals seeking a comprehensive dinamics solution.\u003cbr\u003e\u003cbr\u003eElevate your audio production with the TC505 – a truly exceptional compressor that combines the best of both worlds\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCommon section:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInput signal type: Line-level (+4dBu)\u003c\/li\u003e\n\u003cli\u003eFrequency range: 20Hz-20kHz (+\/-1.5dB)\u003c\/li\u003e\n\u003cli\u003eInput\/Output type: Balanced (transformers)\u003c\/li\u003e\n\u003cli\u003eAmplifying element: Hybrid\u003c\/li\u003e\n\u003cli\u003eMIX mode: Yes (smotth control)\u003c\/li\u003e\n\u003cli\u003ePower consumption: 320mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCompressor (tube mode):\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKnee type: soft\u003c\/li\u003e\n\u003cli\u003eRatio: 1\/2...10\/1 \u003cspan data-mce-fragment=\"1\"\u003e(switchable slope)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eAttak time: \u003cspan data-mce-fragment=\"1\"\u003e1...50ms (switchable)\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eRelease time: \u003cspan data-mce-fragment=\"1\"\u003e50...1000ms (switchable)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCompressor (optical mode):\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKnee type: medium\u003c\/li\u003e\n\u003cli\u003eRatio: 1\/2...10\/1 \u003cspan data-mce-fragment=\"1\"\u003e(switchable slope)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eAttak time:\u003cspan\u003e 10\u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003e...200ms (switchable)\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eRelease time: 20\u003cspan data-mce-fragment=\"1\"\u003e0...1000ms (switchable)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eThe brief review of the device can be found on \u003ca href=\"https:\/\/www.bonedo.de\/artikel\/rse-tpc-1pro-tc505-test\/\"\u003ehttps:\/\/www.bonedo.de\/artikel\/rse-tpc-1pro-tc505-test\/\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe User Manual can be downloaded \u003ca title=\"RSE TC505 User Manual\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0594\/1424\/9572\/files\/RSE_TC505_User_Manual.pdf?v=1754906178\"\u003eHERE\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ciframe width=\"100%\" height=\"450\" src=\"https:\/\/w.soundcloud.com\/player\/?url=https%3A\/\/api.soundcloud.com\/playlists\/1464421984\u0026amp;color=%23ff5500\u0026amp;auto_play=false\u0026amp;hide_related=false\u0026amp;show_comments=true\u0026amp;show_user=true\u0026amp;show_reposts=false\u0026amp;show_teaser=true\"\u003e\u003c\/iframe\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv style=\"font-size: 10px; color: #cccccc; line-break: anywhere; word-break: normal; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; font-family: Interstate,Lucida Grande,Lucida Sans Unicode,Lucida Sans,Garuda,Verdana,Tahoma,sans-serif; font-weight: 100;\"\u003e\n\u003ca href=\"https:\/\/soundcloud.com\/rse-audio\" title=\"RSE Audio\" style=\"color: #cccccc; text-decoration: none;\" target=\"_blank\"\u003eRSE Audio\u003c\/a\u003e · \u003ca href=\"https:\/\/soundcloud.com\/rse-audio\/sets\/rse-tc505-test-recordings\" title=\"RSE TC505 test recordings\" style=\"color: #cccccc; text-decoration: none;\" target=\"_blank\"\u003eRSE TC505 test recordings\u003c\/a\u003e\n\u003c\/div\u003e","brand":"RSE Audio","offers":[{"title":"Default Title","offer_id":42237569302628,"sku":"A-0576","price":685.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0594\/1424\/9572\/files\/TC505_1.png?v=1697122758"},{"product_id":"500-series-monoglue-compressor-rse-mc506","title":"500 Series monoglue compressor RSE MC506","description":"\u003ch2\u003eDiscontinued\u003c\/h2\u003e\n\u003cp\u003eThe piece of 500 series gear that melds two signals together. An ideal remedy for mischievous rhythm sections and more.\u003c\/p\u003e\n\u003cp\u003eThe monoglue compressor not only mixes channels in analog way but also delicately compresses the combined signal using a VCA compressor IC. To impart a smoothness and warmth, we have used a dual vacuum triode. Furthermore, our unique branded transformers not only provide a wide frequency range but also infuse a subtle saturation into the signal.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eChannel A \u0026amp; Channel B have the fully balanced transformer inputs. After the intermediate amplification, signals are mixed (the mixing ratio depends on two independent input gain regulators). The mixed signal level can be controlled with the 'Tube gain regulator' and goes to the tube stage, which enriches the signal with the harmonics. The signal from the tube goes to two sources at the same time - DRY out (level controlled with knob) and WET out (is also controlled with the knob, but not only it). The main magic occurs in a WET channel. We used a famous THAT2181 IC to compress the signal with minimal distortion and extremely short possible attack\/release times, which can be extended if needed with stepped controls. The compression chain has traditional controls - Threshold, Ratio, Attack, and Release. The ratio can be set up to 1:20 which transforms the compressor into the limiter.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eIn fact, the user receives two signals - an uncompressed signal on the output of channel A and a compressed one on the output of channel B. The Compress\/Bypass switcher puts the uncompressed signal to the output A and B at the same time and deactivates the compression chains. Both channels have fully balanced transformer outputs as well.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInputs: 2 x Balanced line-level (+4dBu)\u003c\/li\u003e\n\u003cli\u003eCompression ratio: 1\/2; 1\/4; 1\/20\u003c\/li\u003e\n\u003cli\u003eAttack time: \u003cspan\u003e0.8-2.7-8.2-26-80-250ms\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRelease time: 0.17-0.21-0.35-0.54-1.0-2.0\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOutputs: 2 x Balanced line-level (+4dBu)\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RSE Audio","offers":[{"title":"Default Title","offer_id":42237638639716,"sku":"0650","price":840.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0594\/1424\/9572\/files\/MC506.png?v=1697123385"},{"product_id":"ra-2a-tube-opto-compressor","title":"RA-2A Tube Opto Compressor","description":"\u003cp\u003eA modern take on the LA-2A sound for today’s studios\u003c\/p\u003e\n\u003cp\u003eRA-2A (RA2A) keeps the musical, program dependent character engineers love and adds daily-use practicality: a confident low-impedance tube output, a custom opto cell, predictable controls, and a clean, full-range response. It is the kind of compressor you reach for first on vocals and bass, and then keep on the mix bus because it just works.\u003c\/p\u003e\n\u003ch2\u003eWhat it does best\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eVocals: natural leveling that holds phrases together without pumping\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBass: solid and even low end with clear articulation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eGuitars and keys: smooth presence with controlled peaks\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDrum and mix bus: gentle glue in Compressor mode, confident peak control in Limit mode\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBass-heavy material: engage Comp. HPF to keep kick and sub from driving the compression\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy RA-2A\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eLA-2A inspired behavior with a modern control feel\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCustom opto cell for a quick start to the release and a smooth, musical tail\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLow-impedance, high-current tube output that drives long lines and transformer loads with authority\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTwo operating modes for everyday work: Compressor for leveling, Limit for firmer peak control\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eComp. HPF sidechain filter to reduce low-frequency triggering and minimize pumping on bass-heavy sources\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFull-range, studio-ready response across the mix\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eControls\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003ePeak Reduction\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eGain\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCompressor or Limit toggle\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eComp. HPF sidechain high-pass filter\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eArchitecture\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eFully tube audio path\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAll stages use 6N1P tubes or close equivalents\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOutput stage: low-impedance, high-current tube driver\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSidechain and detector: tube based\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCustom opto cell with program dependent behavior\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSidechain equalization\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eComp. HPF: high-pass filter in the detector path\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePurpose: reduces low-frequency sensitivity so kick and sub do not dominate the gain reduction\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eResult: tighter low end, less pumping, more stable vocal and bus compression\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTime constants (program dependent)\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eAttack: typically faster than 10 milliseconds\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRelease: two stage behavior\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003einitial recovery about 0.2 to 0.3 seconds to roughly half of the gain reduction\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003elong tail about 1 to 3 seconds to settle near zero\u003cbr\u003eNotes: characterized around 10 dB of gain reduction. Actual values vary with material and settings.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCompression ratio\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eCompressor mode: approximately 3:1 to about 6:1 depending on program and Peak Reduction\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLimit mode: greater than 10:1, program dependent, musical rather than brickwall\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFrequency response\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eWorking range from about 20 hertz to 20 kilohertz (-2\/+0 dB)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e50 hertz to 10 kilohertz (+\/-0.5dB)\u003cbr\u003eNotes: measured at +18dBu levels into a standard line load.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eGain and headroom\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eMake-up gain range: up to about 15 dB\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIntended for professional line level workflows\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eConnections and loading\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eLine level input and output\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRecommended load: 600 ohms or higher\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMechanical and power\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eMono 19\" 2U unit\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMeasurement notes\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTime constants characterized around 10 dB of gain reduction\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFrequency response taken at unity gain into a standard line load\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eWorks with all professional line level interfaces, consoles, and patchbays\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIdeal before or after transformer\/solid-state based gear and EQs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWarranty and support\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e1 year of warranty\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eService and tube replacement guidance included in the quick start guide\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eOrdering and preorder terms\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eFounders Batch price is available for the first 25 units only\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOption to purchase a stereo pair bundle at a reduced combined price\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eNotes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eLA-2A is a reference to the classic behavior and workflow; all trademarks belong to their owners\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRA-2A is a modern interpretation designed for today’s production needs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs this a faithful clone of the LA-2A?\u003c\/strong\u003e\u003cbr\u003eIt is inspired by the workflow and program-dependent feel, but the circuit is our own: all stages use 6N1P tubes, the sidechain is tube based, the detector includes a Comp. HPF filter, and the opto cell is custom. The goal is the familiar musical response with modern practicality.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between Compressor and Limit modes?\u003c\/strong\u003e\u003cbr\u003eCompressor mode provides gentle leveling with a soft knee and program-dependent ratio. Limit mode shifts to a much higher effective ratio for firmer peak control while staying musical.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does Comp. HPF do in practice?\u003c\/strong\u003e\u003cbr\u003eIt applies a high-pass filter to the detector so low frequencies do not dominate the gain reduction. Use it to keep kick and sub from pulling down a vocal, or to stabilize mix-bus compression on bass-heavy material.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use RA-2A on the mix bus?\u003c\/strong\u003e\u003cbr\u003eYes. Many engineers prefer Compressor mode for subtle glue and Limit mode for occasional peak control. The response stays full range and consistent, and Comp. HPF helps maintain low-end stability.\u003c\/p\u003e\n\u003cul\u003e\u003c\/ul\u003e","brand":"RSE Audio","offers":[{"title":"Default Title","offer_id":46911340871780,"sku":null,"price":925.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0594\/1424\/9572\/files\/ra-2a_bgremoved_2048_transparent_0630a575-b784-402a-aca2-a750130efa4b.png?v=1758743800"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0594\/1424\/9572\/collections\/DSC_6270.jpg?v=1788505498","url":"https:\/\/rseaudio.net\/collections\/compressors.oembed","provider":"RSE Audio","version":"1.0","type":"link"}