Tascam MH-8 Headphone Amplifier 8 Channel

Tascam MH-8

The Tascam MH-8 is the ideal headphones amplifier for studio, stage and installation. Each of the eight stereo outputs delivers 250 mW per side with three switchable sources available. Two stereo inputs can be shared to any of the outputs, and individual stereo direct inputs are available for each of the eight channels. A headphones channel can use any one of these inputs, or mix several together. And a set of foldback outputs allows the user to chain other MH-8s into a system.

The MH-8 is housed in a rugged, rack-mountable metal chassis with built-in power supply (no AC adapter), ground terminal and ground-lift switch for many years of safe and reliable operation.

High-power headphones amplifier with flexible signal routing

8 channels for one pair of stereo headphones each

2 stereo inputs assignable to each headphones channel (input 1: balanced XLR/TRS, input 2: balanced XLR / unbalanced RCA)

Input level control, signal presence and overload LEDs on both stereo inputs

Additional switchable direct stereo input (balanced TRS) on each headphone channel (left input can be used for mono signals)

High output power (250 mW + 250 mW for each headphone)

Level control, signal presence and overload LEDs on each headphone channel

Each channel switchable to mono

Foldback outputs allow stereo input signals 1 and 2 to be looped through to other units

Ground terminal and ground lift switch on rear panel

Easy replaceable fuse

1U rack-mountable chassis

Audio inputs and outputs
Stereo input 1/2		XLR (balanced) x 2
Nominal input level		+4 dBu
Maximum input level		+24 dBu
Input impedance		56k Ω
Stereo input 1		6.3-mm TRS (balanced) x 2
Nominal input level		+4 dBu
Maximum input level		+24 dBu
Input impedance		56k Ω
Stereo input 2		RCA (unbalanced) x 2
Nominal input level		–10 dBu
Maximum input level		+10 dBu
Input impedance		22k Ω
Direct inputs 1–8		6.3-mm TRS (balanced) x 16
Nominal input level		+4 dBu
Maximum input level		+24 dBu
Input impedance		56k Ω
Foldback outputs		6.3-mm TRS (balanced) x 4
Nominal output level		+4 dBu
Maximum output level		+24 dBu
Output impedance		94 Ω
Headphones outputs		6.3-mm stereo jack x 8
Maximum output power		250 mW + 250 mW (at 32 Ω)

Audio inputs and outputs

Stereo input 1/2

XLR (balanced) x 2

Nominal input level

+4 dBu

Maximum input level

+24 dBu

Input impedance

56k Ω

Stereo input 1

6.3-mm TRS (balanced) x 2

Nominal input level

+4 dBu

Maximum input level

+24 dBu

Input impedance

56k Ω

Stereo input 2

RCA (unbalanced) x 2

Nominal input level

–10 dBu

Maximum input level

+10 dBu

Input impedance

22k Ω

Direct inputs 1–8

6.3-mm TRS (balanced) x 16

Nominal input level

+4 dBu

Maximum input level

+24 dBu

Input impedance

56k Ω

Foldback outputs

6.3-mm TRS (balanced) x 4

Nominal output level

+4 dBu

Maximum output level

+24 dBu

Output impedance

94 Ω

Headphones outputs

6.3-mm stereo jack x 8

Maximum output power

250 mW + 250 mW (at 32 Ω)

Audio performance
Frequency response		20 Hz – 50 kHz, ±3 dB (PHONES outputs, 100 mW, 32 Ω) 10 Hz – 100 kHz, ±3 dB (FOLDBACK outputs)
S/N ratio		≥85 dB(A) (PHONES outputs, 20-kHz LPF) ≥90 dB(A) (FOLDBACK outputs, 20-kHz LPF)
THD		≤0.05 % (PHONES outputs, 100 mW + 100 mW (32 Ω), 20-Hz HPF and 20-kHz LPF) ≤0.007 % (FOLDBACK outputs, 20-Hz HPF and 20-kHz LPF)
Channel separation		≥50 dB(A) (within a channel, PHONES outputs, 20-kHz LPF,1 kHz nominal input, 32 Ω termination) ≥90 dB(A) (FOLDBACK outputs, 20-kHz LPF, 1 kHz nominal input, 600 Ω termination)
Crosstalk		≥65 dB(A) (PHONES outputs, 20-kHz LPF, 1 kHz nominal input, 32 Ω termination)

Audio performance

Frequency response

20 Hz – 50 kHz, ±3 dB (PHONES outputs, 100 mW, 32 Ω)
10 Hz – 100 kHz, ±3 dB (FOLDBACK outputs)

S/N ratio

≥85 dB(A) (PHONES outputs, 20-kHz LPF)
≥90 dB(A) (FOLDBACK outputs, 20-kHz LPF)

THD

≤0.05 % (PHONES outputs, 100 mW + 100 mW (32 Ω), 20-Hz HPF and 20-kHz LPF)
≤0.007 % (FOLDBACK outputs, 20-Hz HPF and 20-kHz LPF)

Channel separation

≥50 dB(A) (within a channel, PHONES outputs, 20-kHz LPF,1 kHz nominal input, 32 Ω termination)
≥90 dB(A) (FOLDBACK outputs, 20-kHz LPF, 1 kHz nominal input, 600 Ω termination)

Crosstalk

≥65 dB(A) (PHONES outputs, 20-kHz LPF, 1 kHz nominal input, 32 Ω termination)

Power supply and other specifications
Voltage requirements		100–240 V AC, 50–60 Hz
Power consumption		36 W
Dimension (W x H x D)		482 mm x 44 mm x 280 mm
Weight		3.8 kg
Operating temperature range		5 °C to 35 °C

Power supply and other specifications

Voltage requirements

100–240 V AC, 50–60 Hz

Power consumption

36 W

Dimension (W x H x D)

482 mm x 44 mm x 280 mm

Weight

3.8 kg

Operating temperature range

5 °C to 35 °C

Design and specifications subject to change without notice.