SubZero HPA400 4-Channel Headphone Amp with Studio Headphones Pre-Owned

SubZero HPA400 4-Channel Headphone Amp with Studio Headphones Pre-Owned

• Condition Rating - 2
• 4 Headphones included
  
• 1 owner, which is The Music Bank
• Excellent condition
• 2/3 years old
• 19" rackmount headphone amp, with four pairs of monitoring headphones
• Studio-quality headphones, with closed earcups for effective sound isolation
• Two-band EQ and left/right mute controls on each channel
• Powers up to 12 headphones (three outputs per channel)

Pre-Owned Condition Rating

Rating Score 1 - Excellent - Item is in 'as new' condition

Rating Score 2 - Very Good - Item will show signs of light use

Rating Score 3 - Good - Item will show signs of use including light marks

Rating Score 4- Average - Item will show signs of heavy use, dents/chips 

Rating Score 5 - Not Working - Item is sold for parts

 Specifications:

• Driver size: 53mm
• Sensitivity: 94 +/- 3dB
• Impedance: 60Ω
• Max Power: 1200mW
• Frequency range: 10Hz - 30kHz
• Cable length: 3m
• Type of cable: Attached, straight
• Plug: Gold-plated 3.5mm stereo
• Adapter: Gold-plated 6.3mm stereo

Audio inputs

• Main input:
• Connection: Balanced XLR and 1/4” TRS
• Input impedance: 40KΩ (balanced)/ 30KΩ (unbalanced)
• Max input level: 16dBu

• Direct in:
  • Connection: 1/4” TRS

• Aux input:
• Connection: Unbalanced stereo 1/4” TRS
• Input impedance: 5kΩ
• Input level: 22dBu

Audio outputs

• Main output: XLR and 1/4" TRS balanced
• Headphone output: 1/4" TRS stereo

Power amplifier

• Max output amp: +24dBm (load impedance 100Ω)/ +21dBm(load impedance 80Ω)
• Min load impedance: 8Ω

Displays

• Input level: 7-digital LED display: -30/-24/-18/-12/-6/0dB
• Output level: 7-digital LED display: -30/-24/-18/-12/-6/0dB

System specification

• Frequency response: 10Hz-150KHz +/-3dB
• Noise: 22Hz-22KHz >90dB@0dBu
• Dynamic range: 22Hz-22KHz 110dB
• Distortion: 0.006 typically, @+4dBu 1KHz

Channel controls

• Balance per channel: mix between aux and main signals / balance between right and left channel
• Output level per channel: variable
• Treble:
• Cutoff frequency: 6kHz
• Range: +/-12dB
• Bass:
• Cutoff frequency: 150Hz
• Range: +/-12dB

• Stereo/2-channel: switches between stereo mode and 2-channel mode
• Left mute: mutes the channel's left signal
• Right mute: mutes the channel's right signal