Classe Audio Delta Stereo – Power Amplifier

AED 92,691.90 inc VAT.

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SKU: 81473 Category: Brand:

A compact, high-performance stereo power amplifier that delivers the first 12.5 W per channel in pure Class A, rising to 250 W per channel for dynamic peaks — combining finesse and raw power in one elegant component.

Description

The Classé Audio Delta Stereo amplifier distills decades of Classé’s engineering innovation into a streamlined, powerful stereo amplifier. Designed for situations where dual mono amplifiers are impractical, the Delta Stereo offers uncompromising performance in a single chassis.

Its hybrid design delivers up to 12.5 W per channel in pure Class A for musical finesse and warmth, while providing up to 250 W per channel (and even more at lower impedances) to handle dynamic peaks with ease. The power supply is massive and backed by a custom toroidal transformer, giving it the muscle to drive demanding loudspeakers with authority.

Internally, the Delta Stereo features hand-laid circuit boards and 6-layer PCBs to minimize signal path lengths and reduce noise. High-quality Mundorf capacitors (22 in the output stage) help maintain clarity and precision. Mechanical design also matters: custom Navcom feet isolate vibration, and Furutech rhodium-plated RCA connectors and torque-guard binding posts deliver excellent connectivity.

Aesthetically, the unit makes a statement with its anodized aluminum body and twin illuminated VU meters — giving both functional feedback and visual gravitas. Whether in a reference system or a high-end listening room, the Delta Stereo exudes a “monument to sound” ethos.

Built to professional standards and calibrated with attention to every electronic and mechanical detail, this amplifier is a reference-grade component that integrates beautifully with other Delta-series gear while delivering sustained, emotionally rich musical performance.

Specification Value
Model / SKU Delta Stereo
Amplifier Class Class A (first 12.5 W), then Class AB
Number of Channels 2 (Stereo)
Continuous Output Power (1 kHz, 0.1% THD+N) • 12.5 W / 8 Ω (pure Class A)
• 250 W / 8 Ω
• 500 W / 4 Ω (with stable AC line)
• 350 W / 2 Ω (with stable AC line)
Frequency Response 1 Hz – 650 kHz (–3 dB, 50 Ω source imp.)
Total Harmonic Distortion (500 kHz BW, 25 Vrms, 4Ω/8Ω) • < 0.0016% at 1 kHz
• < 0.002% at 10 kHz
• < 0.003% at 20 kHz
Total Harmonic Distortion (90 kHz BW, 25 Vrms, 4Ω/8Ω) • < 0.0007% at 1 kHz
• < 0.001% at 10 kHz
• < 0.0025% at 20 kHz
Peak Output Voltage (nominal AC line) 129 Vp‑p into 8 Ω ; 138 Vp‑p no load
Input Impedance (1 kHz, BAL / SE) 82 kΩ
Voltage Gain (1 kHz, BAL / SE) 29 dB
Intermodulation Distortion (SMPTE 4:1, 8Ω / 4Ω, BAL / SE) < 0.0018%
Intermodulation Distortion (CCIF, 8Ω / 4Ω, BAL / SE) < 0.004%
Signal-to-Noise Ratio (A-weighted, 22 kHz BW) 118 dB (120 dBA) per Safe & Sound spec.
Crosstalk (one channel driven to 250 W / 8Ω) 124 dB at 100 Hz; 107 dB at 1 kHz; 90 dB at 10 kHz
Slew Rate 75 V/µs (some retailers)
Output Impedance 0.009 Ω (100Hz and 1kHz), 0.012 Ω (10kHz)
Damping Factor (1 kHz, ref 8Ω) 850
Dimensions (W × D × H) 17.50 in × 19.37 in × 8.74 in (444 mm × 492 mm × 222 mm)
Gross Weight 116.4 lb (52.8 kg)
Net Weight 102.3 lb (46.4 kg)
Inputs 1 × RCA, 1 × XLR (balanced)
Binding Posts Dual 5-way torque-guard speaker connectors