Bel Canto e.One REF501S Stereo Power Amplifier
3000
Bel Canto e.One REF501S Power Amplifier
Bel Canto e.One REF501S Power Amplifier solidly built all-aluminum compact chassis, delivers dynamic, accurate hi resolution sound at 250 Watts with incredible speed and control.
REF501S Stereo Amplifier Features
Impedance Optimized Input Stage uses selected precision resistors in a balanced high Common Mode Rejection, low output impedance driver that is critical to the amplifier’s performance, ensuring that the refined dynamic qualities of the recording are preserved.
DC Signal Path
The REF501S is DC coupled with no coupling capacitor in the signal path. This optimizes the audio signal quality and maximizes both micro and macro dynamic performance. The amplifier will protect itself and your speakers if excess DC is detected with very fast shut-off.
At the Core
High speed ultra-efficient switch mode amplification delivers literally unheard-of levels of performance using an innovative 5th order loop filter. This technology provides extremely low noise and distortion performance over the entire audio bandwidth, allowing the musical message to come through unchanged and with remarkable purity.
Why Class D?
Well-designed Class D switching supplies generally sound more open through the midrange with better Bass control. Note that 250W is 23.9dBw which means that it will drive an 85dB speaker to 108dB with 111dB peaks, theoretically. In a large room with the volume control 10dB below max we’re measuring about 25W of continuous power. This is loud! Most power concerns are more about control rather than how much real power is delivered. This gives further advantage to Class D and switching power supplies as their efficiency is high even at lower power outputs helping them sound ‘bigger’.
WBT NextGen Speaker Connectors
The WBT NextGen connectors provide the best possible connection from the amplifier to the speaker cables. We choose them because they impart minimal sonic signature to the sound, remaining open and grain-free up throughout the audio frequency band.
- Max Power Output 250W @1% THD per Channel
- Minimum Load: 2 ohms per Channel
- Peak Output Current: 17.5 Amps per Channel
- Balanced Input Impedance: 95 ohms
- Voltage Gain 27dB
Click here to view the Ref 501s page on Bel Canto’s website
Click here to view Bel Canto products available at Criterion Audio
The REF500S is the stereo power amplifier from Bel Canto. Perfect with the Bel Canto DAC 2.7. Small and compact. On demonstration.
The Bel Canto e.One series was originally inspired by new technology which enabled exceptionally high performance from a compact chassis by using advanced switching power supplies and amplifier technologies. The compact size imposes a focused design aesthetic where the chassis is stripped down to its essentials to achieve ultimate performance and functional goals. The compact, strong, rigid chassis also brought about benefits in mechanical performance, reducing the resonant profile of the chassis without resorting to expensive and massive construction.
The REF500S stereo amplifier has incredible power per square inch with two independent mono boards in a single chassis. Independent power supplies and isolated input signal filter technology reduces high power amplifier energy for a cleaner, transparent power. From an elegant, cool-running compact chassis, each channel provides 500W into 4 ohms and 250W into 8 ohms.
| Maximum Power Output: | 500W 4 ohms, 250W 8 ohms per channel |
| Power Output 1% THD: | 400W 4 ohms, 200W 8 ohms per channel |
| Minimum Load: | 2 ohms per channel |
| Peak Output Current: | 35 amperes per channel |
| Frequency Response: | /-3 dB 1.5Hz-70KHz, all loads |
| THD N: | 0.003% 1W, 1KHz, 4 ohms |
| IMD (CCIF): | 0.0003%, 1W, 14:15KHz, 4 ohms |
| Output noise: | 35uVRMS A-weighted 10Hz-20KHz |
| Voltage gain: | 27dB (single ended or balanced input) |
| Damping factor: | >1000 |
| Output Impedance at 100Hz: | <8 milliohms |
| Dynamic Range: | 121dB |
| Input Voltage for Max Output: | 2Vrms |
| Input connections: | Single-ended RCA or balanced XLR |
| RCA input impedance: | 100Kohms |
| Balanced input impedance: | 200Kohms |
| Output connections: | 2-sets WBT Nextgen 5-way binding posts |
| Power On usage: | 19W |
| Power Off usage: | 0.0W |
| Internally Set Operating Voltages: | 100-120VAC or 230-240VAC 50/60 Hz |
| Size: | 8.5 x 3.5 x 12[inches], 216 x 88 x 305[mm] (WxHxD) |
| Weight: | 15 lbs, 7 Kg |
