Specifications:

Frequency response 20 Hz - 30 kHz (+0 dB, -1 dB; all inputs to all outputs)
Equivalent input noise -129 dB (DIN weighted, max. gain, 150Ω source)
Noise level <-100 dBV (IHF-A weighted, MASTER min.)
<-80 dBV (GAIN min., LEVEL max. MASTER nom.)
Common Mode Rejection Ratio >80 dB
Total harmonic distortion 0.008% (1 kHz, 30 kHz LPF)
Cross-talk attenuation >80 dB (Direct out at 1 kHz, 150 Ohm source, IHF-A weighted)
Microphone inputs 4 x XLR, balanced
Maximum input level -68 dBm to +2 dBm
Direct outputs 4 x 6.3 mm stereo jack (switchable balanced/unbalanced)
Mix outputs, unbalanced 2 x 6.3 mm jack
Mix outputs, balanced 2 x XLR
Stereo sub input 2 x 6.3 mm jack
Power supply 230 V AC, 50 Hz
Dimensions: 482(w) x 48*(h) x 204(d) mm (*incl. feet)

Full Tascam price list

Tascam MX-4
is a 4-channel premium-grade microphone preamplifier designed specifically to meet the demands of digital recording. Whether connected directly to four channels of a Tascam multitrack recorder, as the stereo source for a Tascam DAT recorder or as an add-on to an existing mixing console the MX-4 delivers a level of performance previously found only in the microphone amplifiers of the most expensive of consoles.

Main features:

• 4 balanced XLR microphone inputs capable of accepting signals in a wide range

• Specially selected components and Tascam proprietary circuit design based on the 5532 operational amplifier give superb audio quality 

• Phase switches on each channel

• Selectable MS-matrix between channels 1 and 2

• Individual channel phantom power switching

• High-voltage (±20 V) power supply rails provide enough headroom to deliver the dynamic range accepted by modern digital recorders

• Direct outputs on each channel (6.3 mm jack, balanced/unbalanced selectable)

• XLR (balanced) and 6.3 mm jack (unbalanced) stereo mix outputs

• Stereo sub inputs allow cascading with a second MX-4 or external console

• Ground lift switch

• 1U rack-mountable chassis