TL Audio PA-2 Dual Valve Mic Pre Amp/DI (Version 2)

TL Audio PA-2 (version 2) Dual Channel Valve Microphone Pre-Amplifier

The 2U rackmount T L Audio PA-2 Mic Pre-Amp / DI Box combines classic valve techniques with low noise solid state circuitry to produce a unit offering a high quality microphone pre-amplifier and instrument amplifier on each of its two channels.

The microphone inputs are via balanced XLR sockets with individually switchable 48V phantom power.

The instrument inputs are via unbalanced jack sockets. Channel B also features a phase reverse switch to correct any phase error when using stereo inputs.

A solid state, electronically balanced input amplifier is used on the microphone input, to achieve state of the art performance with very low noise, low distortion and wide bandwidth. The mic input is suitable for low impedance (150-600 ohm) microphones, with a gain control range of +10 to +60dB.

When selected to microphone input, the second stage amplifier is one half of an ECC83/12AX7 twin triode valve, providing the character of valve technology whilst retaining a very high quality signal path.

The instrument amplifier consists of two stages of valve amplification. The input is switchable for optimum impedance and gain for guitar or keyboard inputs. A variable intensity peak LED glows at the onset of valve compression, becoming increasingly bright as the degree of overdrive is increased.

A Thru’ socket provides a convienient connection to a backline amplifier or foldback mixer, etc.

The DI box is also equipped with a ground lift switch, which can be used to decouple ground loops.

A solid state, balanced output stage completes the signal path by providing a high drive capability, switchable for mic or line level, and suitable for connection to virtually any mixing console, amplifier or PA system.

Latest version 2 of the PA-2 with an output pad switch, a loop-through jack output and a rear panel earth lift switch.