Classe DELTA STEREO, DELTA Mono Info Sheet
DELTA™ MONO and DELTA STEREO
Enjoy the highest, most reliable fidelity with class A amplification, informed design and active cooling of the Classé
Delta MONO and Delta STEREO amplifier. True to the source, class A amplification eliminates switching distortion
when signal levels are small. Lateral MOSFET output transistors also provide the low impedance drive to handle any
loudspeaker effortlessly. Includes 4-pole Mundorf® capacitors to store and release energy quickly and evenly across
the audio band. Vibration-absorbing Navcom® feet. Durable rhodium-plated Furutech® connectors. Elevate your sonic
experience with unmatched detail from an amplifier that stands apart like no other.
HIGHLIGHTS
• Pure class A power up to 35W (MONO) and 12.5W per channel (STEREO) combined with low impedance
drive eliminates switching distortion for small signal levels and provides effortless power delivery to control
any loudspeaker
• Proprietary ICTunnel™ active cooling maintains ideal operating temperatures for best performance and reliability
no matter how hard the amp is driven
• Custom and premium parts including 22 4-pole Mundorf® caps, a custom toroidal transformer and hand-laid
4- and 6-layer circuit boards combine for superior performance attributes
• Furutech® rhodium-plated RCA and torque-guard speaker connectors out-perform gold for greater longevity
and elevated performance
• Custom Navcom® feet reduce vibration, eliminating microphonic effects to improve overall clarity
• Power meters provide diagnostic feedback and a visual aesthetic representation that shows power you hear and feel
DELTA™ MONO SPECIFICATIONS
Frequency Response
(-3dB, 50Ω source impedance)
Continuous Output Power
(at 1kHz, 0.1% THD+N)
1Hz – 650kHz
35W @ 8Ω delivered in pure class A operation
300W @ 8Ω
600W @ 4Ω
1000W @ 2Ω (with AC line held constant)
Harmonic Distortion
(measurement bandwidth:
500kHz, 25Vrms in 4Ω or 8 Ω)
Harmonic Distortion
(measurement bandwidth:
90kHz, 25Vrms in 4Ω or 8 Ω)
Peak Output Voltage
(nominal AC line)
Input Impedance
(at 1kHz, BAL / SE)
Voltage Gain
(at 1kHz, BAL / SE)
Intermodulation
<0.0016% at 1kHz
<0.0018% at 10kHz
<0.0028% at 20kHz
<0.0005% at 1kHz
<0.0006% at 10kHz
<0.0015% at 20kHz
148Vp-p into 8Ω
156Vp-p no load
82kΩ
29dB
<0.001%
Distortion
(SMPTE 4:1) (8Ω or 4Ω, BAL / SE)
Intermodulation
<0.002%
Distortion
(CCIF) (8Ω or 4Ω, BAL / SE)
Signal-to-Noise Ratio
(A wtd in parenthesis) (22kHz BW)
117dB (119.5dBA)
Slew Rate 72V / μs
Output Impedance 0.01Ω (100Hz) , 0.011Ω (1kHz),
0.015Ω (10kHz)
Damping Factor
(at 1kHz, ref 8Ω)
700
Overall Dimensions Width: 17.50in (444mm)
Depth: 19.37in (492mm)
Height: 8.74in (222mm)
Gross Weight 111.6lbs (50.6kg)
Net Weight 97.7lbs (44.3kg)
DELTA™ STEREO SPECIFICATIONS
Frequency Response
(-3dB, 50Ω source impedance)
Continuous Output Power
(at 1kHz, 0.1% THD+N)
Harmonic Distortion
(measurement bandwidth:
500kHz, 20Vrms in 4Ω or 8 Ω)
Harmonic Distortion
(measurement bandwidth:
90kHz, 20Vrms in 4Ω or 8 Ω)
Peak Output Voltage
(nominal AC line)
Input Impedance
(at 1kHz, BAL / SE)
Voltage Gain
(at 1kHz, BAL / SE)
Intermodulation
Distortion
(SMPTE 4:1) (8Ω or 4Ω, BAL / SE)
Intermodulation
Distortion
(CCIF) (8Ω or 4Ω, BAL / SE)
1Hz – 650kHz
12.5W/Ch @ 8Ω delivered in pure class A operation
250W/Ch @ 8Ω
500W/Ch @ 4Ω (with AC line held constant)
350W/Ch @ 2Ω (with AC line held constant)
<0.0016% at 1kHz
<0.002% at 10kHz
<0.003% at 20kHz
<0.0007% at 1kHz
<0.001% at 10kHz
<0.0025% at 20kHz
129Vp-p into 8Ω
138Vp-p no load
82kΩ
29dB
<0.0018%
<0.004%
Signal-to-Noise Ratio
(A wtd in parenthesis)
(22kHz BW)
Crosstalk
(one channel driven to 250W / 8Ω)
118dB (120dBA)
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
Overall Dimensions Width: 17.50in (444mm)
Depth: 19.37in (492mm)
All tests performed un-weighted using BAL input and 500kHz measurement
Height: 8.74in (222mm)
bandwidth (except when specied otherwise). Delta STEREO measurements
made with both channels driven.
Gross Weight 116.4lbs (52.8kg)
Net Weight 102.3lbs (46.4kg)
Specication subject to change without notice.
CLASSÉ 1 Viper Way Vista, CA 92081 www.classeaudio.com
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