{"id":19175,"date":"2024-12-26T12:39:14","date_gmt":"2024-12-26T12:39:14","guid":{"rendered":"https:\/\/masteringmansion.com\/pro-audio\/?post_type=product&p=19175"},"modified":"2026-07-02T13:18:53","modified_gmt":"2026-07-02T13:18:53","slug":"sa-432-d","status":"publish","type":"product","link":"https:\/\/masteringmansion.com\/pro-audio\/categorias\/ecualizadores\/sa-432-d\/","title":{"rendered":"SA-432 D+"},"content":{"rendered":"
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CONSULTAR Disponibilidad!<\/h2>\n
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\u00a0A 1:1 replica of iconic Sontec 432D9.<\/h2>\n

The Sontec MES-432 was one of the first fully parametric stereo studio equalizers built in the mid 70\u2019s. With fully stepped switches, surgical precision and extremely musical op-amps, this EQ made its way on to virtually every single successful record in the 80\u2019s and 90\u2019s and it\u2019s still used till this day as the go to equalizer for mastering engineers around the world.<\/p>\n

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Utilized by some of the most demanding engineers in the world, the Sontec MES-432D9D variant added a two position high shelfving frequency selector (8Khz and 12Khz) instead of the fixed 10kHz found on the C variant. In an attempt to give our customers something extra we added all three positions as well as adding a third position on the low shelf (150Hz) . The SA-432D+ comes with 8kHz, 10kHz and 12kHz on the high shelving and an extra 150Hz position on the low end frequency selector as well as the Iron Mod, Mid\/Side and True Bypass included.<\/p>\n<\/div>\n

The Op-Amps<\/h2>\n

At the heart of every Sontec MES-432D you will find six HS2030 and six HS6000 discrete op-amps. No other op-amp sounds the same and no other op-amp should be used in this circuit. After 2 years of meticulous measurements, auditioning parts and listening tests we successfully reverse engineered these amplifiers which are fully compatible with the originals. The original DOA\u2019s were famously known for being unreliable and unstable so we took this opportunity to improve the original design with better heat dissipation leaving them unpotted for more stability and longevity which was one of the main concerns with the original. Just like the original unit they run at +-28V for extended headroom and are fully discrete with 13 transistors in each op-amp. The SA-432 features a total of six reverse engineered HS2030 and six HS6000 per unit.<\/p>\n

The Circuit<\/h2>\n

Utilizing the original DOA\u2019s plus respecting the original schematic and circuit allowed us to bring this legendary unit back to life in a stable and faithful way. The Q has been respected and is 100% faithful to the original. Fully stepped switches with 1% tolerance resistors have been implemented for perfect and surgical stereo matching and easy recallability. With its 0.5 dB steps for the first 3 dBs, it is perfectly suited for mastering work. The three parametric bands offer wide, overlapping frequency ranges for musical tone shaping.<\/p>\n

The filter design is a Bridged-T-filter in the feedback loop of an op-amp. If you enable the bypass only the filter section is bypassed. The amp section with its HS2030 opamps is still active, just like in the original.<\/p>\n

Added Features<\/h2>\n

The SA-432D+ comes with the following added features:<\/p>\n

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  1. Mid\/Side operation<\/li>\n
  2. Switchable transformers (Iron Mod)<\/li>\n
  3. Addional low shelf (150Hz) frequency selector<\/li>\n
  4. Additional 10kHz high shelving frequency selector<\/li>\n
  5. True Bypass on faceplate<\/li>\n<\/ol>\n

    Superior Components<\/h2>\n

    Each SA-432 comes with state-of-the-art power supply to ensure complete silent operation with Panasonic capacitors. Each band uses 1% tolerance resistors and matched WIMA MPK and Polystyrene capacitors as well as Neutrik XLR connectors have been implemented with period-correct knobs.<\/p>\n

    100% satisfaction guarantee \u2013 if you don\u2019t love your SA-432D+, we\u2019ll refund you<\/h2>\n

    If you\u2019ve used an original Sontec 432D9 before, we\u2019re extremely confident the Stam Audio SA-432D+ will put a big smile on your face every time you use it. However, if you\u2019ve never touched the original before, as gear-lovers ourselves, we understand that the only way to really know if this compressor is for you, is to put it through its paces. That\u2019s why the SA-432 comes with a 30 day money back guarantee. This allows you to get it into your rack and see how it impacts your recordings. If you love it (and we think you will!), great\u2026keep the unit and create amazing music with it. If not, no problems. Just send it back to us and we\u2019ll fully refund your purchase.<\/p>\n

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    Technical Specs<\/h2>\n

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    • Original circuit and schematic 432D<\/li>\n
    • Three parametric bands with 24 frequencies each<\/li>\n
    • Six HS2030 Op-amps<\/li>\n
    • Six HS6000 Op-amps<\/li>\n
    • Three position Low Shelf (50Hz, 100Hz and 150Hz)<\/li>\n
    • Three position High Shelf (8kHz, 10Khz and 12Khz)<\/li>\n
    • Filter Bypass on left ahd right channel<\/li>\n
    • M\/S operation<\/li>\n
    • Iron Mod included<\/li>\n
    • Power switch on faceplate<\/li>\n
    • Panasonic, Polsytyrene and Wima Capacitors<\/li>\n
    • Precision 1% tolerance resistors<\/li>\n
    • Fully stepped mastering swtiches<\/li>\n
    • Voltage switch selector (115V or 230V)<\/li>\n
    • Hand made in Chile<\/li>\n
    • 4U, 300mm depth<\/li>\n
    • 5-year warranty<\/li>\n<\/ul>\n<\/div>\n<\/th>\n

Normal, Mid\/Side<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
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 <\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Stereo EQ with M\/S and Stepped Switches<\/h4>\n

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