Classe Delta Stereo Power Amp
Details
Performance In A Single Chassis
The Delta STEREO distils all of Classe's innovation and knowledge into a compact high-performance stereo amplifier. In situations where dual mono amplifiers can't be accommodated, Delta STEREO offers uncompromising 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 (0ver 350W/Ch @ 2ohms), it drives loudspeakers with utmost confidence.
Power Supply
Massive, high-quality power supply.
Transformer
Custom toroidal transformer.
Clarity
Delta STEREO delivers exceptional clarity. Every effort has been made to preserve complete separation between channels, delivering the natural sound that Classé is legendary for.
Internal Circuitry
Hand-laid circuit boards feature throughout. 6-layer circuit boards provide for shortened signal and power pathways with the lowest possible noise.
Fully Balanced
Fully balanced output stage and balanced circuitry.
Capacitors
22 x 4-pole Mundorf capacitors feature into Delta STEREO.
Stable And Strong Base
Custom-made Navcom feet absorb and reduce vibrations to ensure the amplifier performs to its very best.
Furutech
Furutech rhodium-placed RCA and torque-guard speaker connectors.
Design
Delta STEREO has presence. Its capabilities are expressed through design and it looks fantastic in any room or installation.
Custom VU Meters
The illuminated VU meters beautifully communicate output with elegance and detail.
Specifications
| Continuous Output Power | |
|---|---|
| (at 1kHz, 0.1% THD+N) | 250W / 8Ω (12.5W in pure Class-A operation) |
| (at 1kHz, 0.1% THD+N) | 500W / 4Ω (with AC line held constant) |
| Frequency Response | |
| (-3dB, 50Ω source impedance) | 1Hz - 650kHz |
| Harmonic Distortion | |
| (Measurement bandwidth: 500kHz, 25Vrms in 4Ω or 8Ω | <0.0016% at 1kHz |
| (Measurement bandwidth: 500kHz, 25Vrms in 4Ω or 8Ω) | <0.002% at 10kHz |
| (Measurement bandwidth: 500kHz, 25Vrms in 4Ω or 8Ω) | <0.003% at 20kHz |
| Harmonth Distortion | |
| (Measurement bandwidth: 90kHz, 25Vrms in 4Ω or 8Ω) | <0.0007% at 1kHz |
| (Measurement bandwidth: 90kHz, 25Vrms in 4Ω or 8Ω) | <0.001% at 10kHz |
| (Measurement bandwidth: 90kHz, 25Vrms in 4Ω or 8Ω) | <0.0025% at 20kHz |
| Peak Output Volatage (nominal AC line) | |
| Peak Output Volatage (nominal AC line) | 129Vp-p into 8Ω |
| Peak Output Volatage (nominal AC line) | 138Vp-p no load |
| Input Impedance (@ 1kHz, BAL/SE) | |
| Input Impedance (@ 1kHz, BAL/SE) | 82kΩ |
| Voltage Gain (@ 1kHz, BAL/SE) | |
| Voltage Gain (@ 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 weighted in parenthesis) (22kHz BW) | 118dB (120dBA) |
| Crosstalk | |
| (One channel driven to 250W / 8Ω) | 124dB (100Hz), 107dB (1kHz), 90dB (10kHz) |
| Slew Rate | |
| S/Rate | 75V / µs |
| Output Impedance | |
| 100Hz / 1kHz / 10kHz | 0.009Ω (100Hz), 0.009Ω(1kHz), 0.012Ω (10kHz) |
| Damping Factor | |
| (at 1kHz, ref 8 ohms) | 850 |
| Dimensions | |
| W/H/D | 444 x 222 x 492mm |
| Weight | |
| Kilograms | 46.4 |
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