Vintage King’s Ryan McGuire recently deciphered the history of Neve’s 33609 compressor/limiter to explain the differences between the several models that have been released over the years. Read on to discover what makes each significant and how this studio favorite has evolved and been emulated since its creation three decades ago.The original (often called « Metal Knob ») Neve 33609 was a rack mounted adaptation of the Class A/B 2264, 32264 and 33314 (broadcast version) compressor/limiter console modules, which were a later incarnation of the fully Class A 2254. All use what’s called a « diode-bridge » topology to achieve gain reduction. There are other quality modern compressors in this vein that deserve mention as well, namely the Buzz Audio DBC-20/DBC-M and BAE 10DC/10DCF.
The original all discrete « Metal Knob » version of the 33609 was discontinued by Neve and replaced with the 33609 C
version. The C version had a more robust power supply and the amplifiers used the BA640 IC based cards, as opposed to the earlier discrete BA440 cards. The new 640 had more headroom and a faster recovery time after clipping, which was important for broadcast use. Another difference was based on the transformers, the C used Belclere transformers, as opposed to the Maranair/St.Ives of the original version.
Neve 33609 C
AMS Neve 33609 J
The next version following the C was called the 33609 J. The « J » stood for Japan, as after Neve discontinued the C version, there was demand enough from Japan specifically that AMS Neve reissued the 33609. The J was non-discrete as the C had been, so shortly after release and following the requests of many users, AMS Neve turned the J into the 33609 J/D
version. The « J/D » stands for « Japan Discrete » and went back to the BA440 type amplifiers of the earliest version, which many end users preferred.The most recent iteration, the 33609 N
, uses more modern construction techniques, similar to the 1073N. The transformers are now of the Maranair branded variety that AMS Neve is having custom made for them to the original specs of the earliest version. The look of the unit harkens back to the original « Metal Knob » a bit more. They have added a fast and slow switch to the compressor attack time, which none of the other versions had. The unit remains discrete and has a sound very much in line with those originals. There is also enhanced « I/O » switching on this newest version.
AMS Neve 33609JD
AMS Neve 33609N
Call Vintage King today for a demo at 888.653.1184, as we stock the new 33609N, as well as the Buzz Audio
compressors mentioned above. We often have vintage Neve 33609 examples in stock, which we are happy to send out for comparison as well. You cannot go wrong with any of them!
Source : http://vintageking.com/blog/2016/06/neve-33609-compressor