D4 is a TPA3255 PFFB power amplifier for passive speakers with stereo 300W x2 power output. Subwoofer output, subwoofer changes with master volume, cutoff frequency 80Hz. D4 has two modes: BYPASS (treble/midrange/bass bypassed) and TONE Treble/ Midrange/Bass connected)
In TONE mode, provide gain control within +/-12db range for treble/midrange/bass.
With HDMI ARC / BLUETOOTH/ USB /Optical/ Coaxial /RCA input.HDMI ARC / BLUETOOTH/ USB /Optical/ Coaxial signals are converted and output by D/A ES9023P for decoding.
OP-Amps are two OPA1642 and replaceable
Specifications： Model: D4 THD: ≤ 0.01% SNR: ≥ 108dB SINAD: 87dB Input Mode: HDMI ARC / BLUETOOTH/ USB /Optical/ Coaxial /RCA Power Supply: 36V5A/48V5A/NO POWER Working Voltage: 24V~ 48V Max Power Output:300W + 300W @4Ω Terminating Impedance: 2-8Ω Frequency Range: 20Hz - 20kHz Output Mode: Passive speakers/Active subwoofer
Sampling Rate: Optical /Coaxial 44.1KHZ~192KHZ
USB 44.1KHZ~48KHZ
Package Include: O-NOORUS D4 Amplifier*1 36V5A/48V5A/NO POWER(Optional) USB LINE/ U DISK User Manual*1
