Benchmark HPA4 - Technical Specifications; Output and Input Specifications

Instruction Manual for HPA4 with 1.0.X Firmware – REV B Page 50
Specifications
THX-888 Headphone Outputs
Test conditions: 1 kHz test tone, Output Level = +21 dBu, Unity Gain (unless noted)
Number of Headphone Outputs
2
Output Connector - Differential Drive
Gold-Pin Neutrik™ XLR4 - female
Output Connector - Common Ground Return
1/4" Neutrik™ TRS Jack
SNR
135 dB, A-Weighted
131 dB, 20 Hz to 20 kHz
Output Noise
< 2.45 uV, 20 Hz to 20 kHz
Frequency Response
-0.006 dB at 10 Hz
-0.014 dB at 20 kHz
-3 dB at 0.1 Hz and 500 kHz
Output Impedance
Near 0 Ohms
Maximum Output Power and Voltage
6 Watts into 16 Ohms, 9.8 Vrms
2.6 Watts into 45 Ohms, 10.8 Vrms
640 mW into 200 Ohms, 11.3 Vrms
440 mW into 300 Ohms, 11.5 Vrms
Maximum Output Current (protection threshold)
1.5 Amps
Crosstalk, XLR4 Output
-133 dB@1kHz, -115 dB@10kHz
THD, 16-Ohm Load
-125 dB, 0.00006%, 16-Ohm Load
THD+N, 20 kHz BW, 16-Ohm load
-115 dB, 0.00018%
Volume Control Range
Mute, -112 dB to +15 dB in 0.5 dB
steps
Balance Control Range
+/- 6 dB in 0.5 dB steps
Balanced Analog Outputs
Test conditions: 1 kHz test tone, Output Level = +24 dBu, Unity Gain (unless noted)
Number of Balanced Analog Outputs
3 (left, right, mono sum)
Output Connectors
Gold-Pin Neutrik™ XLR - male
SNR
137 dB, A-Weighted
135 dB, 20 Hz to 20 kHz
Output Noise
< 2.1 uV, 20 Hz to 20 kHz
Frequency Response
-0.005 dB at 10 Hz
-0.001 dB at 20 kHz
-3 dB at 0.1 Hz and 500 kHz
Output Impedance
60 Ohms
Maximum Output Level
+28 dBu, 19.5 Vrms
THD
-126 dB, 0.00005%
THD+N, 20 kHz BW
-115 dB, 0.00018%
Volume Control Range (with 0 dBFS digital input)
Mute, -112 dB to +15 dB in 0.5 dB
steps
Balance Control Range
+/- 6 dB in 0.5 dB steps