Technical

The PA2V2 is based on the LM4881 opamp, built in a simple and classic inverting feedback circuit. It is supported by good quality parts, chosen specifically to create the resulting sound character (which many owners report to be slightly warm). Features:

The Amp Measures 2.6″ x 2.6″ x 1.1″

The LM4881 Operational Amplifier

Bourns Audio Potentiometer

2x 470 uF Panasonic Input Capacitors

2x 2200 uF Panasonic Output Capacitors

1% Precision Metal Film Resistors

Frequency Response from 5 Hz up to 40 KHz

Signal to Noise Ratio (SNR) of 100 dB

Variable Gain from 0 to 610%

Operates on 2 AA Batteries

100 Hours or Greater Battery Life

Plus A Few Other Secrets!

Batteries

The amp runs on two AA sized rechargeable NiMH 1.2 Volt batteries. The AA is one of the most common and easy to find batteries in the world. Ten years from now you’ll probably still be able to find them. A charging jack lets you plug in a USB charging cable or an AC adapter to make recharging simple. The amp has a very long battery life, in the area of 100 hours between charges during typical use. The rechargeable design reduces waste and saves you money.

How to Change the Batteries

Applications

Besides being used to improve sound quality, the amp has found itself in many other applications. You can basically use the amp anywhere there is an audio line-out or headphone jack. Some examples include: