Mullard Stereo 3-3 amplifier


The Mullard 3-3 in stereo form.

Considered by many to be one of the best single ended amplifier designs. The Mullard 3-3 is in a class of its own.

Available for European or US mains voltages. Please ensure you select the correct mains option when purchasing.

We also understand that some customer have their own valves or tubes, so you are able to purchase the amplifier without them.

Free UK shipping

  • 10 working days to build, test and ship.

An amazing Hi-Fi experience

Considered by many as one of the best single ended amplifier designs. The Mullard 3-3 is a class A EL84 valve design very popular in the 1950’s/60’s.

Although rated at 3.5W RMS, this amplifier packs a punch well above its size.

Easily filling a room with a warm depth of sound that is not achievable in many single ended designs.

The -3dB frequency response is from 20Hz – 30KHz

We use our own superior transformers, made by us in the UK. The mains transformer is vacuum impregnated and has a full copper screen to reduce mains bourn rf interference.

The output transformers have been designed with multiple sections to increase their high frequency response and help provide a fantastic stable amplifier.

The method of winding and type of steel employed in the output transformers enable a superior low frequency response down to 20Hz.

Elegantly designed using 2mm welded aluminium with a high gloss black finish.

High quality valves included

Two Russian EL84’s, two EF86’s and an EZ81 rectifier valve are included in the price

The EL84’s are supplied in matched pairs.

The EF86’s have gold plated sockets

All sockets are clearly labelled on the chassis.

PCB and hand wired

The majority or the components are mounted on a high quality PCB.

The two gold plated valve sockets are also mounted on this board.

Large 4mm Binding posts

Large 4mm binding posts are used for the speaker connections.

They can be used with banana plugs or wire.

Superior Alps potentiometer

We have used the Alps potentiometer to give a great balance between left and right, with less than <2dB difference between the two channels.

You have a silky smooth gain control.

Power 3.5W RMS
(Into 8 Ohms, 1KHz)
0.4% 1W
1% 3W
Frequency range 20Hz – 30KHz
(Gain set at maximum)
100mV for 3W

Additional information

Weight 6 kg
Dimensions 250 × 300 × 170 mm
Mains voltage

European, US

Valves or tubes

Included, not included


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