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Alto 6 Channel Stereo Headphone Amplifier

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About this item

The Alto 6-Channel Stereo Headphone Amplifier is a universal, multi-purpose mixer and headphone amplifier for rehearsal, studio, or stage. Perfect for headphones, in-ear monitors, or personal monitor mixing, HPA6 features six independent high-power stereo amplifiers in one compact rack unit that delivers maximum audio quality, even at very high or very low volume levels.

This HPA6 has a minimized circuitry path, which means there's less "stuff" for your signal to pass through, keeping your sound clear and crisp. On the rear panel you'll find two additional 1/4" outputs per channel, so you have the capability to send six different mixes to up to 18 sets of headphones or monitors for powerful, precise listening. The rear panel also features stereo inputs and outputs, so you can connect several HPA6 units together for even greater capacity.

The HPA6's front panel gives you a 1/4" headphone jack per channel, each with level and balance controls. Its main section provides a detailed, eight-segment LED meter, a master level knob and a 1/4" Direct-in which gives you the flexibility to mix in an additional source on-the-spot with all channels. The HPA6's front-facing stereo 1/4" Aux inputs on each channel let you mix in any instrument or sound source, such as a click track or loop software.

What's Included With This Item

  • Alto 6 Channel Stereo Headphone Amplifier
  • Power Cable
  • Owner's Manual
  • Alto Warranty

Key Features

  • 6-channel headphone amplifier with 3 headphone outs per channel
  • Main input gain control, individual channel headphone output gain control
  • Individual channel Left/Right muting and Mono switching
  • Front panel Direct In
  • Dedicated LED level metering for Main In and individual channels
  • Individual channel Aux In with Balance control knob to mix Main and Aux levels
  • Main Output for daisy-chaining multiple units
  • Balanced Main Inputs and Outputs
  • Left and Right Mute and Mono/Stereo monitor switches with dedicated LED's per channel
  • Dual voltage power supply for transformer-free international use

Technical Specs

Number of Channels 6
Input Connections Rear:
2 x XLR Female Main Inputs, Balanced
2 x 1/4" TRS Phone Main Inputs, Balanced
Front:1 x 1/4" Stereo Phone Direct In
6 x 1/4" Stereo Phone Aux In
Output Connectors Rear:
2 x XLR Male Main Outputs, Balanced
2 x 1/4" TRS Phone Main Outputs, Balanced
12 x 1/4" Stereo Headphone Outs
6 x 1/4" Stereo Headphone Outs
Maximum Output Level +21 dBm
Function Controls 1 x Input Gain Knob
6 x Balance per Channel Knobs
6 x Output Gain per Channel Knobs
6 x Left Mute Switches(with Indicator)
6 x Right Mute Switches(with Indicator)
6 x Mono/Stereo Mode Switches(with Indicator)
Frequency Response 10 Hz - 50 kHz, +/-3 dB
THD + N 0.005% typ. at +4 dBu, 1 kHz, Gain 1
Noise >90 dB, unweighted, 22 Hz - 22 kHz(>95 dB at+4 dBu)
Display 1 x 8-digit LED Meter Bars(Input)
6 x 4-digit LED Meter Bars(Output)
Specialties Dual Voltage Power Supply
3 Headphone Outputs per Channel
Mono/Stereo Monitor Switching for each Channel
Dimensions 19x8.5x1.7" / 483x216x43.18mm
Weight 6.4lbs / 2.9kg
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