Classique – 6BM8/ECL82 SE – Stereo Audio Integrated Amplifier Kit


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Check out the white paper page.

PLEASE NOTE : Lead time : 2 working days

A little audio connoisseur’s favourite!

An integrated audio stereo valve amplifier DIY kit has been prepared based on a trialed and tested design. Constructed using single ended topology, this stereo valve amplifier produces around 3 Watts of pure valve audio output power – perfect for small to medium sized rooms.

Only using two 6BM8 (also known as ECL82) triode / pentode valves (one for each channel) this amplifier delivers a high grade audio across the audio bandwidth with a great soundstage and clarity. Each channel contains two amplification stages performed by the 6BM8/ECL82 valves.

It is only available as a kit with the option of a compatible enclosure. You will need to choose the option to include the stock enclosure during order.




  • Power output : 3W at 8Ohm
  • Input sensitivity : 0.8 Vrms
  • Valves : 6BM8 / ECL82 triode / pentode valves
  • Topography : Hifi Stereo class A single ended integrated audio amplifier DIY kit
  • Output : 4/8/16 Ohm speakers output impedance selectable on output transformer
  • Power supply voltages: (220/230/240/250VAC) or (115VAC) or (230VAC) supporting most mains supply voltages
  • Input resistance : 100kOhm
  • Frequency characteristic : 26Hz – 40000Hz

How Does It Sound?

Listeners of the system have described the sound produced by the amplifier as high-clarity and very detailed. Paired with a good quality 6BM8/ECL82 valves, this valve amplifier should satisfy anyone who demands a classique valve signatured sound.

There has to be some reasons behind the existence of the “cult of single ended valve amplifiers”. Could it be due to the way audio signal gets amplified in the single ended topology? Unlike the push-pull topology, where the signal is divided into two separate halves (positive and negative halves), there is no risk of crossover distortion of the signal.

There is just something magical about the audio churned by the single ended machine. It sounds so effortless and natural.

If you have any question about this, please get in touch.

The Kit

This valvel amplifier DIY kit (buyer needs to assemble) enables you to build a fully working high quality valve amplifier with relative ease. The kit has been designed with a lot of “upgrade options” and mind. A prototype mounting plate is included in the kit and should be used as a first step for building the amp – just to get you going!

All components have been sourced with quality vs cost in mind and have been thoroughly tested by us.

Remember that you have the 6BM8-ECL82-SE-Classique Assembly manual to work with. The manual contains high resolution images and detail instructions on setting up the kit.

6BM8/ECL82 SE Classique Kit - pictured in a custom-made black chassis with the mounting plate painted black.
6BM8/ECL82 SE Classique Kit – pictured in a custom-made black chassis with the mounting plate painted black.

The Components

The kit contains everything that you need to get the amplifier working. A compatible enclosure is also available as an option!

  • A pair of ECL82/6BM8 valves (can be excluded if you prefer)
  • 2 x 6BM8 SE audio amplifier PCBs
  • 1 x main power supply PCB
  • 1 x valve filament power supply PCB
  • 1 x power transformer (supports 110 OR 220V, 230V, 240V, 250V AC primary winding) – locally made
  • 2 x audio output transformers – locally made
  • Mounting plate (3mm aluminium) – locally cut
  • All screws / nuts / bolts / spacers
  • Alps RK27 stereo potentiometer – high quality hifi-grade stereo potentiometer
  • Carling Technologies double pole switch
  • Speaker / RCA phono input terminals
  • IEC power socket with with internal fuse slot

If you have any question about this, please get in touch.

6BM8/ECL82 SE Classique Kit - pictured on the prototype mounting plate.
6BM8/ECL82 SE Classique Kit – finished product – pictured on a the prototype mounting plate included in the kit.

The Enclosure

An optional enclosure can be selected to be part of this kit. You can read more about the enclosure here. We highly encourage you to purchase the enclosure as part of the kit as it is included at a discounted rate.

Documentations / Downloads

Classique – 6BM8/ECL82 SE
Classique – 6BM8/ECL82 SE

Optional Items

IMPORTANT: Please note that the following items are NOT part of the kit:

  • Wiring / cables – has to be sourced separately
  • Enclosure / plinth – please choose the option with enclosure if required.
  • You have the option of not to include the stock 6BM8/ECL82 valves if you want to source them yourself. Choose the option – without valves during checkout

If you have any question about this, please get in touch.

6BM8/ECL82 SE Classique Kit - pictured in a custom-made elm wood enclosure and the prototype mounting plate.
6BM8/ECL82 SE Classique Kit – pictured in a custom-made elm wood enclosure (a stock enclosure can be selected as an option) and kit mounting plate.

Further Reading

You can read about the design, thoughts and all matters related to producing this kit in its white paper page.

Square wave analysis
Square wave analysis


If you are not sure about something or just have some queries, please do get in touch with us.

If you really want this amplifier and not sure how to set it up, then let us know as we will be able to refer you to a third party service to set this up for you.



This product is sold as a kit, which means that buyer would have to assemble all parts. Printed circuit boards (PCB) are not populated so all parts will have to be soldered onto the PCBs.

It is assumed that buyers would have the knowledge of:

  • soldering
  • assembling screws/nuts/bolts
  • highly skilled and knowledge of high voltage electric circuits and parts
CALEDONIAN AUDIO will take no responsibility on any injury or death as a result of the work conducted to assemble this kit. Please make sure that you know what you are buying and handling. If you have never done any electric and electronic work before we would strongly suggest that you consult us before buying this kit.

Additional information

Weight 4 kg
Dimensions 32 × 27 × 10 cm
6BM8/ECL82 Kit Options

Basic Kit, Basic Kit + 2 valves, Basic Kit + chassis, Basic Kit + chassis + 2 valves


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