Gottomix HA1800
Gottomix HA1800
18-Channel Headphone Amplifier
The Gottomix HA-1800 is a full-featured eighteen-channel stereo headphone amplifier
that includes six auxiliary inputs to allow separate mixes on each headphone channel.
Each output channel also features a dual function Balance control which will pan between Left & Right sides of the main signal bus, or vary the Mix between the main
signal bus and the Auxiliary input for that respective channel.
Each output channel includes one front and two rear panel stereo 1/4-inch TRS headphone jacks for ease of installation and quick patching capability. Mono, Mute L,and Mute R buttons on each channel select between four operating modes: 1) Stereo, 2)Mono Left, 3) Mono Right, 4) Mono Both (Left & Right) for versatile monitoring solutions.Independent output level controls on each channel personalize monitoring levels.
Input options include XLR and 1/4-inch TRS balanced inputs with matching ˇ°Thruˇ± jacks
for bridging multiple units. An additional front panel stereo 1/4-inch TRS Direct In jack
for quick patch override of the rear panel inputs is included for quick insertion of any
stereo source. Master Volume control sets the main signal bus level. Eight-segment
precision LED level metering on the main bus and four-segment indicators on each output channel provide visual feedback of the signal level at all key points.


•  Eighteen High-Power Headphone Amplifier Channels
•  Dual Function Balance/Mix Control
•  Front Panel Stereo Aux Input Connectors
•  Multiple Monitoring Settings
•  Individual Output Level Control
•  Precision Four Segment LED Metering for Output
•  Master Volume Control w/ Eight Segment LED Metering
•  Front Panel Direct In Jack
•  Six Front and Twelve Rear Mounted Headphone Jacks
•  Connects and Drives up to 18 Headphones Simultaneously
•  XLR and 1/4ˇ± Main Inputs and Outputs
•  Parallel Main Outputs for Multiple Unit Use


•  Input Connections: XLR (Female) balanced (2),
•  1/4-inch balanced (9)
•  Output Connections: XLR (Male) balanced (2),
•  1/4-inch balanced (2),
•  1/4-inch stereo headphone (18)
•  Input Impedance: 40K Ohms Main,
•  10K Ohms Direct,
•  15K Ohms Aux In
•  Output Impedance: 32 - 600 Ohms Headphones
•  Maximum Input Level: +21 dBu (all inputs)
•  Maximum Output Level: 150 mW (600 Ohm Headphones)
•  500 mW (32 Ohm Headphones)
•  Maximum Gain: 22 dB
•  Signal to Noise Ratio: >90 dB typical
•  THD: <0.01% typical
•  Dynamic Range: >101 dB typical
•  CMRR: >40 dB
•  Phase Shift: <10 degrees, 20 Hz - 20k Hz
•  Power Requirements: 120 VAC / 60 Hz, or 230 VAC / 50 Hz, 15 Watts
•  Dimensions: 19ˇ± W x 6ˇ± D x 1.75ˇ± H (483 mm W x 152 mm D x 44.5 mm H)
•  Weight: 5.3 lbs. (2.4 kg)
•  Ref: 0 dBu = 0.775 VAC RMS



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