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Croft Acoustics Micro 25 Pre Amplifier


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We believe Croft Acoustics products to be the most understated, best value for money amplification on the audio market. Glenn Croft has over 35 years of experience refining truly innovative valve circuits. All products are hand-built in the UK with meticulous point to point wiring backed up with a 2 year warranty (6 months on the valves/tubes).

The pre-amplifier is simply wonderful giving a clean, lively and musical sound to all vinyl and digital sources.

The Micro 25 Pre-Amplifier employs clever Synchronised Switch Damping over the usual cathode follower valve with the Mosfet not being employed directly in the signal path. Separate volume controls for left and right channels (single volume pot can be specified), Selector switch for phono and three line inputs and a mute switch are on the front panel, along with a power indicator light and on/off switch. This pre-amplifier is designed to work with Croft Acoustics Power Amplifiers, both pre and powers are phase-inverting.

The model listed will have standard gain for the majority of users. Gain can be specified for those with very powerful power amps or very sensitive speakers. If you require this option then please contact us.

We are happy to deal with overseas enquiries and to ship internationally to Countries without dealer support.


Dimensions (WDH)
Valve compliment
Frequency Response (Phono)
Frequency Response (Line)
Sensitivity (Phono)
Sensitivity (Line)
Input Impedance (Phono)
Input Impedance (Line)
Output Impedance
Power Consumption

405 x 270 x 70mm
3 x ECC83
3 kg
20 Hz – 20kHz +/- 0.5 dB
0.1 Hz – 200 kHz -1dB into 100 kΩ
1 mV rms for 0.5V rms output
150 mV rms for 0.5V rms output
47 kΩ
100 kΩ
< 300 Ω
16 W