High-end High Power audio Class D Amplifier

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

CharacteristicValue
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 power1500W RMS / 8 Ohm
Bandwidth (-1dB, 4 ohm load)17Hz – 20 KHz
Bandwidth (-3dB, 4 ohm load)6Hz – 30 KHz
BridgeableYes
Distortion (1KHz, 1W, 4ohm load)0.015 %
Noise level, unweighted200 µVrms
Signal/Noise ratio>104dB (input shorted, refered to full power)
THD + N at full power<0.5% (sine 1KHz)
Modulation typePWM synchronous natural sampling
Number of channels2
Continuous peak current before limiting27A
Efficiency>95 %
Gain40dB in balanced inputs (34dB when used asymetricaly)
Minimun Admissible Load impedance0.5 ohm
Input impedance10 KOhm, balanced
Output ripple (input shorted to GND)600mV RMS
Switching Frequency360 kHz
PROTECT mode activated output voltage6 V
Chassis19″ 2U rackable
Weight6kg
Main supply voltage110V – 220V 50/60 Hz
Overcurrent ProtectionYes
Overvoltage protectionYes
Undervoltage protectionYes
Load short-circuit proofYes
Temperature controled fanYes
Temperature protectionYes
CLIP detector/indicatorsignalling LED
PROTECTsignalling LED
Temperature sensorsignalling LED

Options

CharacteristicOptionOption #)
Output connectorsHeavy binding posts, gold plated.
Neutrik speaker connector
A0
A1
Output connectors placementFront panel.
Rear panel.
B0
B1
Volume controlwithout
with
C0
C1
Input connectorsRCA
XLR
D0
D1
Input connectors placementFront panel.
Rear panel.
E0
E1
Chassis 19″ 2U handleswithout
with
F0
F1
Main supply inlet and voltage selector locationFront panel.
Rear panel.
G0
G1
Temperature controled fan locationFront 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 locationFront 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.