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Passive

Noise and distortion unmeasurable with APx555, below analyzer limits

Equipoise Differential Buffer

Gain: 1 (0dB)
Frequency Response: 20Hz-20Khz, -0.2db, 3Hz-500KHz, -3dB
THD: <0.004%, 20Hz-20KHz, at 1V RMS
IMD: <0.0055%, CCIR
SNR: >120dB, A-weighted, referenced to 2V RMS
Output Impedance: 75 ohms SE, 600 ohms balanced
Topology: JFET differential amplifier compound pair with equalized-gm followers
Tube Gain
Gain: 4 (12dB)
Frequency Response: 20Hz-20Khz, -0.2db, 3Hz-200KHz, -3dB
THD: <0.01%, 20Hz-20KHz, at 1V RMS
IMD: <0.01%, CCIR
SNR: >115dB, A-weighted, referenced to 2V RMS
Output Impedance: 75 ohms SE, 600 ohms balanced
Topology: differential triode input with semi-circlotron follower stage
LISST Gain
Gain: 5 (14dB)
Frequency Response: 20Hz-20Khz, -0.2db, 3Hz-150KHz, -3dB
THD: <0.005%, 20Hz-20KHz, at 1V RMS
IMD: <0.006%, CCIR
SNR: >114dB, A-weighted, referenced to 2V RMS
Output Impedance: 75 ohms SE, 600 ohms balanced
Topology: differential depletion MOSFET with semi-circlotron depletion MOSFET follower stage
Input Impedance: 10K ohms
Crosstalk: >85dB, 20-20kHz
Inputs: 2 XLR pairs plus 3 RCA pairs, selectable via front switch or remote
Outputs: 1 XLR pair plus 2 RCA pairs, selectable via front switch or remote
Volume Control: relay-switched stepped attenuator with discrete thin-film resistors, 128 0.625dB steps
Power Supply: One 48VA transformer with regulated 300V rail, plus 24VA transformer with regulated +/-18V rails, plus 6.3VDC tube heaters and regulated 5VDC for microprocessor
Remote:
Standard IR remote for all front panel functions: volume, input select, gain, mute, etc.
Standard Forkbeard control system for all the above, plus advanced functions including system health and alerts, and additional capabilities when more Schiit Forkbeard products are added to the stack.
Power Consumption: 40W typical
Size: 16” x 8” x 2” + tube height (about 2.5″ more)
Weight: 11 lbs
APx555 Report for Freya+ / Freya+ F