Pultec EQH-2
The Pultec EQH-2 is a slightly simplified and compact version of the well-known EQP-1. The differences are the fixed Q for the peak boost band and the fixed high cut frequency. Originally this was 10 kHz, but I chose 20kHz instead. Instead of using a classic tube output stage I wanted to have a discrete Opamp solid-state stage based on the Melcor 1731 (predecessor of the API 2520), which is also an option available for the new built Pultecs. This device looks like a mono version, but it is stereo!
We harvested some vintage input and output transformers from RFT preamps made in the former GDR. The inductors for the bell curve band are hand wound. All capacitors for the filters are WIMA. We decided to let relays switch the frequencies, since this is the safer or more sophisticated way than sending the audio signal through the manual switches. Instead, the rotary switches only control the voltages of the relays. Still these switches are high quality Elmas whereas the boost/atten switches are 21-way Blore Edwards.
I guess I don’t have to tell you how wonderful a Pultec sounds, right? The bass is terrific, as are the highs. Solid state Pultecs are said to have a tighter and more accurate bass than the tube ones and I can relate to that. If you crank up 5 or 8 kHz you have to force yourself to stop cranking at some point, because it will never start to sound bad! That’s the magic of a good Pultec. I often use the EQH-2 for getting the low end right and to add upper midrange presence, not only in Mastering but also in Mixing.
Features
solid state class A output stage
Discrete Opamps
WIMA capacitors
RFT transformers
rotary switches only
Hand wound inductors
Relay bypass and frequency selection
stereo layout
