CLASSSE Delta Poweramp Stereo
Power Amplifier
The Delta STEREO distills all of Classé's innovation and knowledge into a compact high-performance stereo amplifier.
In situations where dual mono amplifiers can't be accommodated, Delta STEREO offers uncompromizing performance in a single component.
AMPLIFICATION
The first 12.5W of power output are pure Class A, and with a total of 250W per channel at its command (over 350W/Ch @ 2Ω), this compact, powerful amplifier drives loudspeakers with utmost confidence.
CLARITY
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.
DESIGN
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.
REVIEWS
"A perfect performance, like a perfect 10 in the Olympics. The Classé Delta STEREO amplifier is a dream machine for music lovers and home theater enthusiasts living the audiophile lifestyle. [...] The only appropriate term for how the Classé Delta STEREO performed in my system is "perfectly."
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"Classé's new Delta PRE and STEREO amplifiers are a technical tour de force, with flawless performance. There is no aspect of the sonic performance that I can criticise. This combination has abilities well beyond the asking price, so is heartily recommended." — Mark Gusew
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"Classé’s Delta PRE and STEREO are impeccably designed and manufactured products that offer impressive operational flexibility and dependability. These two components are visually appealing and practical to install in a domestic setting. The Delta PRE and STEREO were a pleasure to operate and, more importantly, to listen to." - Andrew Quint
"A first-class demonstration from A to Z: there is hardly a better way to sum up the presentation of the new Classé Delta preamplifiers and power amplifiers." - Martin Freund
Specifications
Width | 17.50 in (444 mm) |
Depth | 19.37 in (492 mm) |
Height | 8.74 in (222 mm) |
Gross Weight | 116.4 lbs (52.8 kg) |
Net Weight | 102.3 lbs (46.4 kg) |
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 |