Audio Note OTO Phono SE Amplifier
The OTO is available in a variety of Push-Pull (Level 1) and Single Ended (Level 2) versions.
Push Pull
The OTO PP models have been specifically engineered for sonic performance rather than technical specification, and fulfil all Audio Note (UK) Level 1 criteria: -
Pure Class A Push-Pull Pentode operation
Materials and component quality
The output transformers are custom designed and manufactured by Audio Note (UK) and are of extremely high quality, offering outstanding, class-leading performance in today’s world of high performance audio.
Single Ended
Part selection is optimised to realise the most neutral and realistic sonic reproduction. ?
The OTO SE models fulfil all Audio Note (UK) Level 2 criteria: -
Pure Class A Single Ended Pentode operation
Materials and component quality
Some of the superior quality components utilised in the OTO SE include: -
Audio Note (UK) foil capacitors, used in the most critical areas. Dual power supplies and transformers, one for the output stage and one for the remaining circuitry. Custom designed output transformers, manufactured by Audio Note (UK). These output transformers—one of the most critical areas of valve amplifier design—allow the OTO SE to produce impressively extended and controlled bass.
Some of the superior quality components utilised in the OTO SE Signature include: -
Audio Note (UK) Copper foil capacitors used in the most critical areas. Audio Note (UK) Tantalum resistors used in the most critical areas. Custom designed IHiB output transformers, manufactured by Audio Note (UK). These output transformers—one of the most critical areas of valve amplifier design—allow the OTO SE Signature to produce impressively extended and controlled bass.
INPUT IMPEDANCE - 100K Ohm, Line Level
47K Ohm, Phono input
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INPUT SENSITIVITY - 220mV (Push Pull) / 300mV (Single Ended) Line Level
2mV(Push Pull) / 3mV (Single Ended) Phono input
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MAXIMUM OUTPUT - 9 Watts (Push Pull) / 10 Watts (Single Ended) RMS per channel into 4 or 8 Ohm loads
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CHANNEL BALANCE - +/- 0.3dB
VALVE COMPLEMENT - Push Pull - 1 x 5670 2 x 6UA6 4 x 6005 1 x ECC83 (Phono models only) 1 x 6DJ8 (Phono models only) Single Ended - 1 x ECC82 (Phono models only) 2 x ECC83 4 x EL84 1 x ECC83 (Phono models only) 1 x 6DJ8 (Phono models only)
UNIT WEIGHT - 17kg
UNIT DIMENSIONS - 140mm (h) x 440mm (w) x 410mm (d)
MAINS INPUT - AC 100-120V / 220-240V 50/60Hz
MAX. POWER CONSUMPTION - 100W
?NOTE - Due to Audio Note (UK)'s ongoing research and development program, specifications are subject to change without notice.