• Two independent stereo headphone amps
• Two balanced input feeds common for both amps
• Each amp has adjustable level for left and right input channels
• Each channel can be switched to the left ear, right ear or both
• Balanced inputs have coarse gain controls on rear panel presets
• Phase reverse switch
• Unbalanced single XLR input mode
• XLR audio loop through for daisy chaining multiple amplifiers
• Headphone outputs on 6.35mm jack sockets
• Battery powered 2 x PP3
• Unit auto powers down when no headphones are inserted in the jacks
• 18v DC power input
• Loop through DC power
• Lightweight robust aluminium construction

For many years our GSGH2 twin headphone amplifier has been the 1st choice for professional broadcasters. The GS-HA008 builds on the GSGH2s specification and features to offer a modern robust portable twin headphone amplifier to supercede the GSGH2. 

The GS-HA008 is a very useful twin headphone amplifier. It has wwo independent input channels that can be routed separately to left ear, right ear, or both, across both headphone amplifiers. Each input channel has individual coarse gain controls and each headphone amplifier has separate left/ right headphone volume controls.

For looping in large numbers, there is audio and power pass through. This makes the GS-HA008 suitable for audio monitoring in a dense environment such as an orchestra, where units can simply be looped together.

BALANCED INPUT IMPEDANCE >50K Ohms 
UNBALANCED STEREO INPUT IMPEDANCE >22K Ohms (On each side) 
INPUT GAIN RANGE -20dBu to +9dBu 

FREQUENCY RESPONSE: -1dBu @ 40Hz & 20kHz 

NOISE: -86dBu (RMS 22-22kHz) @ Min Gain
NOISE: -80dBu (RMS 22-22kHz) @ Line Up
NOISE: -62dBu (RMS 22-22kHz) @ Max Gain

DISTORTION @ Line  up into 600 Ohms
100 Hz <0.5%
1kHz <0.03%
10kHz <0.06%

HEADPHONE IMPEDANCE 200 Ohms to 2K Ohms 
HEADPHONE VOLUME POT LEVEL RANGE -?dBu to +10dBu 

MAXIMUM HEADPHONE LEVELS 
****WARNING HIGH SOUND LEVELS CAN BE HARMFUL TO YOUR HEARING**** 
+16dBu into 2K Ohms 
+16dBu into 600 Ohms 
+15dBu into 200 Ohms 

HEADPHONE CONNECTORS 6.35mm A & B gauge

POWER Internal: 2 x PP3 9 volt battery 
EXTERNAL DC INUT: 18V @ < 29mA 
EXTERNAL DC INPUT & OUTPUT CONNECTORS: 2.5 mm Jack (inner positive) 
BATTERY LIFE 
BATTERY INDICATOR Steady red LED indicates good battery Flashing red LED indicates low battery 
OVERALL SIZE 40 x 172 x 121 mm (H x W x D) 
UNIT WEIGHT 560 Grams

Please use one of the following methods to contact us:

Telephone: 01622 753662
International: +44 1622 753662
Email: sales@glensound.com
Skype: live:marc_8167
Online: contact form