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Mercury EQ-H1 Equalizer Pair – No Longer Available

Studio program equalizer

Product Description

The Mercury EQ-H1 Program Equalizer has transformer balanced input and output, with a single ended gain make up amplifier. The EQ-H1’s passive EQ/gain make up amp topology provides a musically satisfying result unobtainable with active and parametric EQ’s, since it does not rely upon negative feedback (and all it’s associated phase and dynamic distortions) to achieve equalization. The new Mercury production utilizes only the highest quality passive components, while remaining true to the original production. 

The Mercury EQ-H1 has a different amplifier than the Mercury EQ-P1 thus it has a different tone. The EQ-H1 and EQ-P1 sound different on the same application. The EQ-H1 is more punchy and robust and the EQ-P1 is more open and silky. 

The Mercury EQ-P1 also has transformer balanced input and output, with a fully balanced (push-pull) gain make up amplifier. The only modernization feature on the unit is a user switchable (in/out) interstage transformer. In the original Pultec EQP this transformer was always in the signal path, however, realizing that some of today’s engineers might want to remove it with the Mercury EQP1 Program Equalizer it is possible to do so with in/out switch on the Front Panel. This takes the middle (interstage) transformer out of the circuit Up, in the "in" position, it is more "vintage" like the original Pultec. Down, in the "out" position, it is a little more "open" and "airy." Either way, the input and output transformers are always in the circuit. The new Mercury production utilizes only the highest quality passive components, while remaining true to the original production. 


Product Specifications

Condition New
Tube or Solid State Tube
Channels Dual-Channel
Chassis 19-inch Rack-mount
Rack Spaces 4u
Digital I/O No
EQ Type Parametric, Pultec-Style

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I would like to thank VK for the wonderful sales assistance, service and prices. This was my first purchase with you and it won't be my last. I only wish I'd discovered you years ago!
Matthew R.
I had two Grammy wins this year - Ray LaMontagne & Carolina Chocolate Drops. Both made with help from Vintage King!
Ryan F.
In almost 20 years in Pro audio buying, never did I receive a unit so well packed and exactly as described. Works flawlessly. The whole process has been so smooth. I will never hesitate to do business with you guys in the future and will recommend you to everyone I know.
Martin C.
This was my first experience buying something from Vintage King (although I surf the "used" categories on the website frequently!), and, despite being on the other side of the world, I had absolutely no trouble and everything went very smoothly.
Phil T.