OTO is available in push-pull or single-ended tube designs.
Single-Ended
Component selection has been optimized to achieve the most neutral and authentic sound reproduction.
Some of the high-quality components used in OTO SE include: –
Aluminum foil and paper-in-oil capacitors are used in the most critical areas. Dual power supplies and transformers are employed—one for the output stage and the other for the rest of the circuitry. The custom-designed output transformers are manufactured by Audio Note (UK). These output transformers—a critical component in tube amplifier design—enable OTO SE to deliver impressively extended and controlled bass.
Some of the high-quality components used in OTO SE Signature include: –
Audio Note (UK) copper foil capacitors are used in the most critical areas, alongside Audio Note (UK) tantalum resistors. The unit features custom-designed IHiB output transformers manufactured by Audio Note (UK). These output transformers—a critical element of tube amplifier design—enable OTO SE Signature to deliver impressively extended and controlled bass.
OTO SE meets all Audio Note (UK) Level 2 standards: –
Pure Class A Single-Ended Pentode Operation
Material and Component Quality
Technical Specifications
Input impedance: 100k ohms,
Line level 47k ohms,
Phono input
Input sensitivity: 300mV line level
3mV phono input
Maximum output of 10 watts RMS per channel into a 4-ohm load.
Channel balance +/- 0.3dB
Vacuum tube: 1 x ECC82
2 x ECC83
4 x EL84
1 x ECC83 (Phono models only)
1 x 6DJ8 (Phono models only)
Unit weight: 17 kg
Unit dimensions: 140mm (H) x 440mm (W) x 410mm (D)
Power Input AC 100-120V / 220-240V 50/60Hz
Maximum power consumption: 100W
