Classé Delta Stereo Power Amplifier
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Delta Stereo 2-Channel Power Amplifier (Single)
The Classé Delta Stereo brings Delta Series performance to a single stereo amplifier, delivering 250W per channel into 8Ω with the first 12.5W per channel in pure Class A. Priced and sold individually.
Description
Delta Series performance in a single stereo component
Where dual mono amplifiers cannot be accommodated, Delta Stereo offers the Delta Series approach in one chassis. A massive, high-quality power supply with a custom toroidal transformer delivers 250W per channel into 8Ω and 500W into 4Ω (with the AC line held constant), with the first 12.5W per channel in pure Class A. Classé has worked to preserve complete separation between channels, using hand-laid 6-layer circuit boards for shortened signal and power paths with the lowest noise.
Connections are Furutech rhodium-plated RCA and torque-guard speaker terminals, and the amplifier stands on custom-made Navcom feet to absorb vibration. A pair of custom illuminated VU meters displays the output of both channels, finished in the Delta Series design language.
- Up to 12.5W per channel delivered in pure Class A operation
- 250W per channel total
- Massive, high-quality power supply with custom toroidal transformer
- Hand-laid 6-layer circuit boards for shortened signal paths and low noise
- 22 4-pole Mundorf capacitors
- Furutech rhodium-plated RCA and torque-guard speaker connectors
- Custom-made Navcom feet to absorb vibrations
- Pair of custom illuminated VU meters
Specifications
| Model | Delta Stereo |
| Pack Type | Single |
| General | |
| Frequency Response (-3dB, 50Ω source impedance) | 1Hz – 650kHz |
| Continuous Output Power (at 1kHz, 0.1% THD+N) | 250W / 8Ω (12.5W in pure Class-A operation) 500W / 4Ω (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 |
| Measurements | |
| Dimensions (W × H × D) | 444 × 222 × 492 mm |
| Net Weight | 102.3 lbs (46.4 kg) |
| Gross Weight | 116.4 lbs (52.8 kg) |
Caring for your Speakers and Amplifiers
To Keep your equipment safe these are some best practices to note. Please be advised that this is only to reduce the risk of misuse and is not an exhaustive list.
Speakers
- Speaker terminals are marked red and black, ensure your amplifier to the speakers are wired on the same colours
- Ensure no loose speaker wire from the red touches a loose wire from the black as this will lead to a short circuit and damage either the speaker, the amplifier or both.
- Not all speakers are designed to play at max volume, kindly consider the pairing of your amplifier and speakers
- Speaker cabinets cannot be replaced please handle with care.
AV & Stereo Amplifiers
- If your amplifier has HDMI ports, ensure all devices are off before plugging in the HDMI cable
- Turn off the amplifier before swoping out or adding speaker cable
- Amplifiers generate heat, place them in a well ventilated space. if possible avoid having anything on top of the unit.
- adding a surge protector can assist with power dips which are likely to damage your devices. Isotek and Furman are industry standard.
- Dusty environments can sometimes lead to accumulation of dust in the electronic components that might affect heat regulation
Shipping & Returns
- Free shipping on orders over R500 within the country.
- Standard delivery within 2–5 business days. Delays will be communicated. This might vary slightly depending on your location.
- Return items in original condition for a full refund. (unopened state)
- Returns that are open/unboxed will be subject to a handling fee. Refunds will only be processed after testing the unit.