High-end High Power audio Class D Amplifier

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This High-end High power class D amplifier is able to deliver 2 x 750 W rms into 4 Ohms speakers in stereo configuration or a huge 1500 W rms into a 8 Ohms speaker in bridged configuration, with less than 1% THD+N at full power.

2 XLR balanced inputs,

Safety switch for changing from stereo to bridged mono operation,

High grade ALPS Blue Velvet volume control.

19″ 2U rackable.

Technical specifications

Characteristic Value
Max. nominal RMS power at 4 ohm (defined at 1% THD, 1KHz) 750W
Max. nominal RMS power at 8 ohm (defined at 1% THD, 1KHz) 400W
Max. bridgeable power 1500W RMS / 8 Ohm
Bandwidth (-1dB, 4 ohm load) 17Hz – 20 KHz
Bandwidth (-3dB, 4 ohm load) 6Hz – 30 KHz
Bridgeable Yes
Distortion (1KHz, 1W, 4ohm load) 0.015 %
Noise level, unweighted 200 µVrms
Signal/Noise ratio >104dB (input shorted, refered to full power)
THD + N at full power <0.5% (sine 1KHz)
Modulation type PWM synchronous natural sampling
Number of channels 2
Continuous peak current before limiting 27A
Efficiency >95 %
Gain 40dB in balanced inputs (34dB when used asymetricaly)
Minimun Admissible Load impedance 0.5 ohm
Input impedance 10 KOhm, balanced
Output ripple (input shorted to GND) 600mV RMS
Switching Frequency 360 kHz
PROTECT mode activated output voltage 6 V
Chassis 19″ 2U rackable
Weight 6kg
Main supply voltage 110V – 220V 50/60 Hz
Overcurrent Protection Yes
Overvoltage protection Yes
Undervoltage protection Yes
Load short-circuit proof Yes
Temperature controled fan Yes
Temperature protection Yes
CLIP detector/indicator signalling LED
PROTECT signalling LED
Temperature sensor signalling LED

Options

Characteristic Option Option #)
Output connectors Heavy binding posts, gold plated.
Neutrik speaker connector
A0
A1
Output connectors placement Front panel.
Rear panel.
B0
B1
Volume control without
with
C0
C1
Input connectors RCA
XLR
D0
D1
Input connectors placement Front panel.
Rear panel.
E0
E1
Chassis 19″ 2U handles without
with
F0
F1
Main supply inlet and voltage selector location Front panel.
Rear panel.
G0
G1
Temperature controled fan location Front panel.
Rear panel.
H0
H1
PROTECT signaling relay (cold contacts NO & NC) with
without
J0
J1
PROTECT relay connector location (mating female connector included) Front panel.
Rear panel.
K0
K1
Stereo/Mono bridged safety switch location Front panel.
Rear panel.
L0
L1

For example, if you want a quote for a Granite Amp without handles, without volume control and no PROTECT signaling relay, with XLR input connectors,Neutrik output connectors and the Stereo/mono switch on the front panel and the mains inlet and fan on the rear panel, you should ask for options A1 B0 C0 D1 E0 F0 G1 H1 J0 L0.