NVO’s new SPA-ONE-SE 2022 model phono preamplifier. It now has some updated features that improve how quiet a tube-based phono stage can be and it also improves the bass definition and impact. (among other things). The tube complement has gone from 13 tubs to 14 tubes!
2022 version
- Gain MC: 60dB
- Gain MM: 45dB
- Frequency response: 20Hz – 200kHz within 0.5dB of RIAA curve
- Total harmonic distortion: less than 0.05% in MC mode, less than 0.005% in MM mode
- Signal to noise ratio: better than -62db @ 0.3mV MC input, better than -80db @ 2mV MM input
- Minimum recommended input for MC: 0.2mV
- Low output impedance of around 8-10 Ω (around 10 times lower than previous model)
- Input load: MC / 1000 ohms (user adjustable), MM/ 47000 ohms
Features
- New designed pcb for on/off operation
- New White cathode follower output (is the same as in the SPA-2 SE)
- Has a second 12AU7 added to the output circuit from previous SPA-One SE units)
- Improved circuit and star earthling scheme
- Top performance components in critical signal path
- Ultra pure 7N solid copper internal wiring
- Isolated PCB from chassis to prevent tube microphonics
- Custom-made toroidal transformer in PSU
- Internally damped enclosure panels
- 14 tubes total & Mundorf capacitors
- Selected special or NOS tubes in signal path (on request)
