Specs
Specifications
Passive:
Output Impedance: varies, maximum 4.8 kohms
THD: unmeasurable on APx555
IMD: unmeasurable on APx555
SNR: maxed on APx555 (typically >120dB ref 2/4V RMS)
Low Gain:
Gain: 1x/2x (SE/balanced)
Frequency Response: 20Hz-20Khz, -0.5db, 3Hz-200KHz, -3dB
THD: <0.001%, 20Hz-20KHz, at 2V RMS
IMD: <0.001%, CCIR (active stage)
SNR: >124db, A-weighted, referenced to 2V RMS
Output Impedance: 75 ohms
Maximum Output: >10V RMS
High Gain:
Gain: 4x/8x (SE/balanced)
Frequency Response: 20Hz-20Khz, -0.5db, 3Hz-200KHz, -3dB
THD: <0.001%, 20Hz-20KHz, at 2V RMS
IMD: <0.001%, CCIR (active stage)
SNR: >116db, A-weighted, referenced to 2V RMS
Output Impedance: 75 ohms
Maximum Output: >10V RMS
Inputs: 4 RCA pairs, selectable via front switch or remote
Outputs: 1 XLR pair and one RCA pair, both active at the same time
Gain Stage: Equipoise differential discrete Class A, zero feedback, 75V rails
Headphone stage: booster based on OPA1656, 150mW typical max output
Volume Control: relay-switched stepped attenuator with discrete thin-film 0.5% resistors , 64 1dB steps
Power Supply: Wall wart, 24VAC/6VAC, internal +45V/-28V and 5V/3.3V rails
Power Consumption: 15W typical
Size: 58.06 x 38.71 x 9.68 cm
Weight: 617 grams