MH-8
Eightfold Headphones Amplifier
The 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.
Features at a glance
- 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
Specifications
| 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) |
| 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.
Page last modified: 2024-07-26 12:33:40 UTC