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
