OTO offers push-pull or single-ended tube designs.
Push-pull
It is designed specifically for sonic performance rather than technical specifications, and meets all Audio Note (UK) Level 1 standards:—
Pure Class A push-pull pentode tube operation
Material and Component Quality
The input stage, consisting of two 6UA6 tubes and one 5670 tube, drives the 6005 output tubes—configured for push-pull operation—with two 6005s used per channel.
Output transformers are custom-designed and manufactured by Audio Note (UK) to an exceptionally high standard, delivering outstanding, world-class performance in today’s high-performance audio landscape.
Power supply employs a multi-component design to ensure precise operation at each circuit stage, while a DC supply powers the low-voltage tube filaments.
Technical specifications
Input impedance 100k ohms, line level.
47k ohm, audio input
Input sensitivity: 220mV line level
2mV Phono Input
Maximum output of 9 watts per channel RMS into a 4-ohm load.
Channel balance less than 0.3 dB
Vacuum tube 1 x 5670
2 x 6UA6
4 x 6005
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
