Aphex 109 Stereo Parametric Tube Equalizer

This used Aphex 109 2-Channel Tube Equalizer comes with a Power Supply.

Condition

This equalizer is in good condition with normal cosmetic wear, has been fully tested, and works great. Please see pictures for details on item condition, only what is pictured is included.

Product Details

The 109 is a 4-stage parametric EQ which can be configured either as a mono 4-band unit or a stereo 2-band device. At the heart of the unit is Tubessence, Aphex's low voltage valve-based hybrid circuit that employs an ingenious solid-state feedback system to make the valve behave and sound like a conventional valve circuit being run from around 300 volts.

With balanced ins and outs on TSR jacks, and switchable -10/+4dBu operating levels, the 109 occupies a scant 1U of rack space.

The controls are set out as two identical stereo channels, each with an input gain control and two fully parametric EQ stages. Band 1 is variable from 20Hz to 2kHz and may be switched from the usual band-pass mode to a high-pass shelving filter if required. Band 2 covers 200Hz to 20kHz and may be switched for band-pass or low-pass filter operation. Each section has a gain range of plus or minus 15dB, and a bright red Clip LED lets you know when you're running too hot. This is an intelligent indicator that monitors three discrete points in the signal path and lights up if any one of them comes close to clipping.

In the center of the box are two buttons: Mode switches from 2-band operation to 4-band (whereby Channel 2's input and Gain control are disabled), while Process acts as a hard bypass switch for the whole unit, routing the inputs directly to the outputs. There are no separate bypass buttons for the individual bands, but the Cut/Boost controls are center-detented so that the unit can be run flat, allowing Tubessence to work its magic without the signal necessarily being EQ'd.