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Electronics, Amplifiers, Stereo Integrated Amplifiers
Atoll PR400 Evolution
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10 mm brushed, micro-blasted, and anodised aluminium front panel, with high-precision engraving. Machined aluminum heatsinks and knobs. 2 mm steel chassis. Four toroidal transformers: 2 x 10 VA (audio) + 10 VA & 1.6 VA (logic).…
Specifications
| Four toroidal transformers | 2 x 10 VA (audio) + 10 VA & 1.6 VA (logic). |
| Full dual-mono structure | – Two toroidal transformers: One per channel. – Four independent audio stages, perfectly symmetrical structure. – Two motorised ALPS potentiometers: One per channel. |
| Sleep mode selection | Low power or preheating. |
| High-contrast OLED display | ON or OFF (after 5 seconds of inactivity). |
| The PR400 EVO can accommodate the following optional boards | – DAC: DA100 and DA200. |
| TECHNICAL DATA Analog power supply | 2 x 10 VA linear Digital power supply: 10 VA & 1.6 VA linear Total of capacitors: 112 000 µF Number of inputs: 5 lines + 2 XLR Input impedance: 357 kΩ Sensitivity: 4 V Signal-to-noise ratio: 100 |
Description
- 10 mm brushed, micro-blasted, and anodised aluminium front panel, with high-precision engraving.
- Machined aluminum heatsinks and knobs.
- 2 mm steel chassis.
- Four toroidal transformers: 2 x 10 VA (audio) + 10 VA & 1.6 VA (logic).
- High-quality shielded MKP coupling capacitors.
- Full dual-mono structure:
– Two toroidal transformers: One per channel.
– Four independent audio stages, perfectly symmetrical structure.
– Two motorised ALPS potentiometers: One per channel. - Bipolar transistor input stages.
- Bipolar transistor current sources and LEDs.
- Perfectly symmetrical audio stages with very low feedback.
- Precise balance adjustment.
- Input renaming is available.
- Sleep mode selection: Low power or preheating.
- Adjustable button backlighting.
- High-contrast OLED display: ON or OFF (after 5 seconds of inactivity).
- ATOLL global remote control is included as standard.
- The PR400 EVO can accommodate the following optional boards:
– DAC: DA100 and DA200. -
TECHNICAL DATA
Analog power supply: 2 x 10 VA linear
Digital power supply: 10 VA & 1.6 VA linear
Total of capacitors: 112 000 µF
Number of inputs: 5 lines + 2 XLR
Input impedance: 357 kΩ
Sensitivity: 4 V
Signal-to-noise ratio: 100 dB
Distortion at 1 kHz: 0.004%
Bandwidth: 0.5 Hz – 780 kHz
Rising time: 0.4 µs
Dimensions: 440 x 370 x 130 mm
Weight: 15 kg
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