Unison Research Phono One
Best valve phono stage for audiophiles seeking pure, natural analog sound.
This valve-driven preamp brings a lush, organic texture to your vinyl collection that solid-state alternatives simply cannot replicate. You trade the convenience of plug-and-play simplicity for a more hands-on setup process, but the reward is a level of musical depth and harmonic richness that makes every record feel like a revelation.
$3499.00
at
Ear Drum Audio
Who it's for
- Audiophiles seeking rich, natural, and harmonically complex musical textures
- Design-conscious listeners curating a sophisticated, high-end audio aesthetic
- Vinyl enthusiasts demanding quiet backgrounds and intricate sonic detail
Who should skip it
- Users with limited shelf space or restricted ventilation options
- Owners of low-output Moving Coil cartridges needing extra amplification
- Budget-focused listeners wary of ongoing valve maintenance and replacement costs
Performance breakdown
RIAA Accuracy
Passive equalization ensures near-perfect tonal balance across the entire frequency range.
Cartridge Synergy
Extensive loading options provide precise matching for diverse MM and MC cartridges.
Noise Floor
External power supply architecture effectively isolates sensitive signals from electrical interference.
Sonic Character
Pure Class A valve design delivers rich, natural, and highly immersive textures.
Build Aesthetics
Timeless Italian craftsmanship makes this a centerpiece for any high-end system.
Tube Performance
Five ECC83 valves provide exceptional gain and harmonic depth for vinyl playback.
Key Specs
Amplification Type
Tube
Amplification Class
Pure Class A
Valve Complement
5 × ECC83 / 12AX7
Gain
54 dB approx.
RIAA Accuracy
Passive, ±0.1 dB tolerance
Input Impedance
Selectable (47k, 100, 47, 20 ohms)
Input Capacitance
Selectable (100, 200, 320, 420 pF)
Total Harmonic Distortion (THD)
<0.1% @ 1 kHz
Signal to Noise Ratio (SNR)
< -80 dB @ 5 mV input
Noise
<0.5 µV eq. input voltage, A-weighted
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