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Peak HiFi is a well established business and was formed in 2004 as audio consultants specialising in high quality audio equipment, with a particular fondness for stereo and analogue equipment, we are particularly enthusiastic for classic turntables such as the Garrard 301 and the Garrard 401. Peak HiFi offers a select range of new and approved used equipment, accessories and services. Reconditioned Garrard 301 and 401 units are available as well as beautifully engineered plinths for these decks. We welcome you to visit us at our premises in the Peak District and to take advantage of our relaxed surroundings and two demonstration rooms where we can demonstrate all of the equipment and assist you with your selection. Please call us to fix an appointment.

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Home > Products > Used and Ex Demonstration > Used and Ex Demonstration > Sugden Masterclass PA-4

Sugden Masterclass PA-4

Sugden Masterclass PA-4
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New - Ex Dem Sugden Masterclass PA-4 Phono Amplifier

We are rotating some of our dem stock and this PA4 is an audio gem one of our favourite phono stages of all time (we can supply with either titanium or graphite fascias as we have both in stock).  

The full potential of the musical magic contained on vinyl discs can only be realised by the passionate treatment of the low level signals emanating from the disc and stylus. Class A circuitry is renowned for its recovery of and synergy with, low level signals and Sugdens is synonymous with Class A circuitry. This combination is fully exploited in the, PA-4, dual mono, two stage, Class A Phono amplifier. The two stages are the moving coil pre-amplifier and the moving magnet, RIAA-correction amplifier.

The moving coil stage is a Class A current feedback circuit and the moving magnet amplifier a Class A voltage feedback circuit incorporating the RIAA correction in the negative feedback loop. DC servo circuits enable direct coupling of the musical signal from moving coil input to final output. The power supply which Sugdens considers an integral part of the amplifier circuitry is a ‘current shunt’ design with a specially designed voltage regulator to prevent rising impedance with higher frequencies.

Constructed with components of exceptional quality, hand assembled on long term stability gold plated circuit boards, the resultant performance is a phono stage of absolute transparency and natural sound.

The user interfaces are all externally selected i.e. input selection 1x MM, 2x MC, the latter with external loading facilities. There are two stereo outputs for recording or line amplifier.


This product is available to order only and delivery is approximately 4 weeks. Payment can be made in full at time of order by selecting Add to Basket and Buy alternatively contact us and we can take a deposit with the balance due 7 days before despatch.

Masterclass PA-4 Phono Amplifier


Inputs: Two moving coil, moving magnet

Outputs: Two line level

Loading: MC1 and MC2

Front Panel Controls: Input Indicator


Input sensitivity: Moving Magnet 3.5mV, Moving Coil 0.15mV

Output: 360 mV

Loading: Moving coil 470 & 100 Ohms

Frequency response: +/-0.3dB 30Hz-30kHz

Signal to noise: -70dB

Nett weight: 6 kgs

Dimensions (inc): 110mm x 430mm x 330mm (h x w x d)

Product Code: SAPA-4

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