Delta STEREO delivers exceptional clarity. Every effort has been made to preserve complete separation between channels, delivering the natural, expansive sound that Classé is legendary for.

Hand-laid circuit boards
6-layer circuit boards provide for shortened signal and power pathways with lowest noise
22 4-pole Mundorf® capacitors
Custom-made Navcom® feet to absorb vibrations
Furutech® rhodium-plated RCA and torque-guard speaker connectors
Delta STEREO has presence. It’s capabilities are expressed through design and it looks fantastic in any room or installation.

Superb material finishes and a pair of custom-designed illuminated VU meters display power output for both channels beautifully.

Delta Series design concept is to create a monument to sound. This amplifier looks every bit has capable as it sounds.

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