Classe - Delta Stereo 1000W (500 X2 into 4 Ohms) 2.0-Ch. Power Amplifier

Here is an amplifier that offers tremendous power and clarity, with an incredible 1 Hz to 650,000 Hz frequency response and the ability to push 250 watts per channel into an 8-ohm load, and doubles that into 4 ohms, while still retaining the capacity to feed 350 watts per channel into a 2-ohm load. Translation: This stereo amplifier will tackle tasks you might have previously only assigned to monoblocks.

Specifications

Overall Dimensions
Width
17.50 in (444 mm)
Depth
19.37 in (492 mm)
Height
8.74 in (222 mm)

Weight
Gross Weight
116.4 lbs (52.8 kg)

Net Weight
102.3 lbs (46.4 kg)

General
Frequency Response
(-3dB, 50Ω source impedance)
1Hz – 650kHz

Continuous Output Power
(at 1kHz, 0.1% THD+N)
12.5W / 8Ω delivered in pure class A operation
250W / 8Ω
500W / 4Ω (with AC line held constant)
350W / 2Ω (with AC line held constant)

Harmonic Distortion
(measurement bandwidth:
500kHz, 25Vrms in 4Ω or 8 Ω)
<0.0016% at 1kHz <0.002% at 10kHz <0.003% at 20kHz

Harmonic Distortion
(measurement bandwidth:
90kHz, 25Vrms in 4Ω or 8 Ω)
<0.0007% at 1kHz <0.001% at 10kHz <0.0025% at 20kHz

Peak Output Voltage
(nominal AC line)
129Vp-p into 8Ω
138Vp-p no load

Input Impedance
(at 1kHz, BAL / SE)
82kΩ
Voltage Gain
(at 1kHz, BAL / SE)
29dB

Intermodulation Distortion
(SMPTE 4:1) (8Ω or 4Ω, BAL / SE)
<0.0018%

Intermodulation Distortion
(CCIF) (8Ω or 4Ω, BAL / SE)
<0.004%

Signal-to-Noise Ratio
(A wtd in parenthesis) (22kHz BW)
118dB (120dBA)

Crosstalk
(one channel driven to 250W / 8Ω)
124dB (100Hz), 107dB (1kHz),
90dB (10kHz)

Slew Rate
75V / μs

Output Impedance
0.009Ω (100Hz), 0.009Ω (1kHz),
0.012Ω (10kHz)

Damping Factor
(at 1kHz, ref 8Ω)
850

Class A operation; 6-layer circuit boards; rhodium-plated RCA and torque-guard speaker connectors