Details：

4- ways audio input switch, （2 groups RCA +2 grounps balance ） 2-ways audio output （1 group RCA +1 grounps balance ） Display color:default red,if need other color ,pls contac us . Encoder control, infrared remote control, stable and convenient Size: width 430mm * height 95mm * depth 340mm Work voltage:AC110V and AC220V optional Resistance: Default 50k ，can provide 100K optional，if need ，pls add a note ！ Net weight:5.9kg Package weight：8.5KG The front panel is made of aluminum. Thickness 10MM ，Other materials are iron 128-level relay pure resistance shunt control Constant input and output impedance Step 0.5db Adopt American DALE/VISHAY precision resistance With audio delay output

Functions:

Remote control switch (control the on and off of the front stage or power amplifier) One key mute One key volume return Default volume setting Volume limit setting Display brightness setting Volume change curve setting (ALPS motor potentiometer version does not have this function) Encoder direction setting (compatible with a variety of self-purchased encoders) Power-on volume mode setting (memory volume, default volume, progressive volume or not) Power-on preheating mode (delayed output audio, very suitable for tube preamplifier or amplifier /preamp board that needs to warm up and stabilize) Mode setting after power-on (on state or standby state)

Package included:

Finished volume control preamplifier x 1 Not included AC power cord The remote not included battery ! The buyer can add preamplifer board according to own needs

Blue display：

Red display：

Custom Duties & Taxes

1. Import duties, taxes, and charges are not included in the item price or postage cost. These charges are the buyer's responsibility.
2. Avoiding some unnecessary trouble, please check with your country's customs office to inform us what we should declare its value before shipping.