Thesis Phi two input phono stage


Premium Phono Stage/Pre-Amplifier (Moving Magnet & Moving Coil)

Totally separated MM and MC stage (simultaneous working)
Adjustable MC gain and impedance

The Thesis φ (phi) is a no-compromise phono preamplifier for all vinyl connoisseurs using a top-class turntable. Just like the Alpha preamp, it is also fed by the thesis Pi twin PSU. By using two independent – MM (moving magnet) and MC (moving coil) – amplifier circuits, it is possible to use two record players connected simultaneously. Cartridge matching is highly customisable for gain and impedance on the rear panel of the unit by jumpers. Noise characteristics, dynamic range, headroom and frequency response of the thesis φ are second to none.

Simple, austere and beautiful the Thesis φ (phi) phono stage is a pure labour of love, designed without compromise and propelled by an unshakeable desire to extract absolute purity from any analogue recording.

Heed Audio Thesis Phi: MM/MC Phono Stage/Pre-Amplifier - Features & Benefits:

Totally separated MM and MC stage (simultaneous work)
Adjustable MC gain and impedance
Discrete bipolar transistor architecture
Exceptional noise figure
High quality casing and fascia

Technical Data

Inputs: 1x MM / 1x MC

Outputs: 1x MM 50 Ω / 1x MM 600 Ω / 1x MC 50 Ω / 1x MC 600 Ω

Gain (MC): 44 / 50 / 56 / 62 / 68 / 74 dB

Gain (MM): 33 / 48 dB

Input impedance (MC): 100 / 220 / 470 / 1000 Ω

Input impedance (MM): 47 kΩ / 150 pF

Noise floor: -90 dBV (MC) / -84 dBV (MM)

Power supply options: Thesis Pi

Dimensions (W x H x D): 9.5 x 7.5 x 22 cm

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