On the 284 board there are two inverting amplifiers used for the EQ circuits. In a 1073 module there are three types of amplifiers. The two amplifiers (not counting the followers) used in 1081 modules have more inherent gain but negative feedback is applied locally on the amplifier module and gain may be increased by shunting some of that feedback to groundвЂ¦ but you have nowhere near the 100+ dB 'open loop' gain typical in a general purpose operational amplifier. Neve amplifiers can use some external feedback like a true opamp does but most of the feedback is local to the module or card and none of the amplifiers have fully differential inputs, nor do they possess nearly as much 'open loop' gain as opamps do. The five amplifier circuits used in classic Neve modules (three types in the 1073 'class A' family and two types in the 1081 'class AB' family - and I'm not counting followers here) are simply discrete amplifiers and, despite the fact that in some of the Neve documentation the term 'operational amplifier' is mentioned, these are not 'op amps' in the sense that they can be programed to do many different things. Walt Jung wrote a decent history re opampsвЂ¦ This was well before Saul Walker (at Melcor and API) came up with what became the actual 2520 opamp. Teledyne Philbrick, Analog Devices, Burr Brown and others produced discrete transistor opamps in what we now refer to as a 2520 footprint. Philbrick later moved to solid state devices. The original opamps were vacuum tube based and made useful primarily by Philbrick. Now - actually the reason I decided to post was to pick nits on the term 'operational amplifier' with respect to old discrete Neve modules.ДЄctually none of the amplifiers in a 1073 module are 'opamps' and, as far as I know, Neve never employed a fully discrete operational amplifier in any of their designs.ДЄn opamp or operational amplifier is a high-gain DC-coupled amplifier with differential inputs, and they are called operational amplifiers because their original application was in analog computing where they were configured for various mathematical operations. I have learned a bunch of stuff by breaking and then fixing thingsвЂ¦ what happens if I change this part 'oops the smoke got outвЂ¦ why did the smoke come outвЂ¦ hmmmmвЂ¦ and so on'.ДЄnyway - reading and building and fixingвЂ¦ rinse and repeat and reading and having a schematic in front of you is not badвЂ¦ and if you get some project to work using the paint by number technique you can then multiply your learning by messing with it. work helps but the painting by numbers approach only gets you so far. The are some good books on electronicsвЂ¦ typically you would need to look around for used books to find much useful info on how transistor amplifiers and active analog equalizers and filters work but the info exists. All these bits can be found in various forums but if you really want to know you really have to start with the basics and follow some structured path. It's not like this is particularly esoteric stuff but there are lots of different bits of information that all has to be explained and tied together. This stereo unit is the perfect solution for studios looking to bring in the very essence of the Neve 1073 sound.As aboveвЂ¦ explaining to a neophyte, in any detailed way, exactly how an entire collection of circuits and components go together to make something like a 1073 module work as it does isвЂ¦ not practical in a forum like this. Class A analogue outputs in XLR format are also found on the rear panel, controlled via adjustable front-panel в‘0 dB Trim controls. Two rear-panel Mic and Line inputs feed dual Class A gain stages, with adjustable Gain control and selectable 48 V available on the Mic inputs. The 1073DPA provides the legendary sound of Neve in a remarkably simple format. With the 1073DPA, the highly sought-after 1073 mic amp sound is now available in a cost-effective 1u stereo rack mount solution, without the additional EQ found on the classic 1073 unit.

Its lush sound with classic Neve signature makes it the consummate mic pre for recording vocals, guitars, and acoustic instruments of all descriptions. The big, punchy sound of the 1073 complements any musical genre, from rock to rap, jazz to classical.

The 1073 is widely considered the worldвЂ™s premier mic preamp, delivering the unique Neve sound featured on some of the most famous recordings of the past 40 years. The Neve 1073DPA provides two world-famous Class A Neve 1073 microphone preamplifiers in a single rack space. Digital Adapters & Miscellaneous Cables.

Neve 1073 preamp at4040