Unison Research Simply Phono Tube Preamplifier

The Unison Research Simply Phono Tube Preamplifier offers exceptional tube-driven performance, making it a standout choice for vinyl enthusiasts. With a design that builds on its predecessors while incorporating modern improvements, this preamplifier delivers a warm and detailed listening experience that brings out the best in your vinyl collection.

Key Features

• Pure Class A Tube Circuitry: Features four ECC83/12AX7 double triodes operating in pure Class A with no global or local negative feedback, ensuring low distortion and natural sound.
• Precision RIAA Equalization: A passive RIAA equalization network, using high-quality resistors and capacitors, provides accurate frequency response across the entire audio spectrum.
• Stable Power Supply: Equipped with a high-voltage power supply and precise voltage regulation, ensuring consistent performance and dynamic response.
• Flexible Input Impedance Settings: Adjustable input impedance allows compatibility with a variety of Moving Magnet (MM) and Moving Coil (MC) cartridges.
• Low Crosstalk and Noise: Symmetrical board design and advanced filtering minimize crosstalk and noise, enhancing overall sound quality.

About Unison Research

Unison Research, founded in Italy, has a long-standing reputation for crafting high-fidelity audio equipment that marries traditional craftsmanship with cutting-edge technology. Each product reflects their passion for music and dedication to producing equipment that delivers both sonic excellence and visual beauty. 

Design and Build

The Simply Phono preamplifier is designed with careful attention to detail, offering a refined sound that enhances your vinyl playback. The unique “ionic bias” configuration in the first gain stage reduces noise and distortion, while the passive RIAA equalization ensures accurate frequency response. This combination results in a dynamic and natural sound that stays true to the original recording.

The robust power supply is a key feature, providing more than 300V of stable, low-ripple power for consistent performance. Additional filtering and regulation circuits help minimize cross-talk and power supply rejection ratio (PSRR), particularly in the first gain stage, ensuring a clean and immersive listening experience.

The Listening Room Experience

Your listening space is unique, and so are your needs. That's why we take the time to understand your preferences, your room acoustics, and your sonic dreams. We'll guide you through our range of hi-fi options, ensuring you find the perfect match for your space and budget. We believe in personal connections, exceptional service, and expert advice because when it comes to sound, there's no one-size-fits-all solution. Contact us to learn more.

Specifications

• Type: Stereo Phono Valve Preamplifier
• Class: Pure Class A
• RIAA Equalization: Passive ±0.2 dB (20 Hz – 20 kHz)
• Output Impedance: 800 ohm
• Output: 1 x line
• Gain: 52 dB
• Total Harmonic Distortion (THD): 0.4% at 1 volt output
• Signal to Noise Ratio (S/N): -72 dB
• Inputs: 1 x phono input for MM or MC cartridges
• Input Impedance: 47 Kohm / 100 / 50 / 22 ohm / 100 pF (modifiable)
• Feedback Factor: 0 dB
• Valves: 4 x ECC83 / 12AX7
• Power Supply: External
• Dimensions: 140 x 290 x 105 mm
• Net Weight: 3 kg (including power supply)