Classe Audio Delta Stereo – Power Amplifier
- Estimated Delivery: 2–3 business days across the UAE
- Free Shipping & Returns : On all orders over AED 1000
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 |























