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


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 DIY kit that needs to be assembled.

Please note that this kit does not include enclosure. You will have to  choose one here.

“Clear brilliant presence projection/soundstage separation and balance …”

See testimonials HERE.

If you are ordering from outside the United Kingdom, there maybe some custom taxes of duties to be paid to your local custom and duty enforcers. Please make sure that you are aware of this.



  • 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.

“One of the best purchases I’ve made …”

See testimonials HERE.

The Kit

This valve amplifier DIY kit (buyer needs to assemble) enables you to build a fully working high quality valve amplifier with relative ease.

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

Remember that you have the assembly manual to work with. The manual contains high resolution images and detail instructions on setting up the kit.

Variations of the Kit:

  1. Basic Kit – contains all PCBs, transformers, switch, potentiometer (knob not included), connectors, fixings (screws, nuts, bolts, spacers) – you supply the valves and enclosure
  2. Basic Kit + 2 valves

Don’t forget that you can also purchase a suitable enclosure with the aluminium top plate for this kit.

If you prefer to buy only the amplifier PCB and its component (without transformers etc) then have a look HERE.

6BM8/ECL82 SE Classique Kit - pictured here with the optional Chassis Model A
6BM8/ECL82 SE Classique Kit – pictured here with the optional wooden enclosure Model A
6BM8/ECL82 SE Classique Kit - with a custom made walnut casing (enclosure Model B)
6BM8/ECL82 SE Classique Kit – with a custom made walnut casing (enclosure Model B)

The Components

The kit contains everything that you need to get the amplifier working.

  • A pair of ECL82/6BM8 valves – (choose a kit with or without the valves)
  • 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
  • All screws / nuts / bolts / spacers
  • Alps RK27 stereo potentiometer – high quality hifi-grade stereo potentiometer
  • 1 x double-pole main switch
  • Speaker / RCA phono input terminals
  • IEC power socket with with internal fuse slot

(Note that you will have to source IEC cable, internal wiring, fuse, volume knob, enclosure and top mounting plate – see our recommendations here).

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

Wooden Enclosure Model A
Optional – Wooden Enclosure Model A

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 an enclosure as it compatible with the dedicated mounting plate. The mounting plate will not only make assembling the kit pretty straight forward, it also enables you to use the default positioning of the components and parts.

Enclosure DIY?

We also supply the drawings of the enclosure if are thinking about making one yourself. Check it out here.

Documentations / Downloads

6BM8/ECL82 SE Classique Kit
6BM8/ECL82 SE Classique Kit

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.
  • 6BM8/ECL82 SE Aluminium Mounting Plate
  • Fuse – 1A slow blow – 20 x 5mm
  • Volume knob – around 28-30mm diameter – 6mm shaft diameter
  • 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

Completing the Build

In order to build this kit, you will need to have the correct tools and devices. We have created a list of items that you might help you during the build together with the links to where you can get it from.

Remember that the list is only a recommendation. We all have our own preferences with what and how to use things. Have a look at the list HERE.

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

The Setup

Once you have completed the kit, the 6BM8/ECL82 SE Classique Amplifier will be sitting in between your CD player (or streamer, MP3 player, pre-amplifier etc) and speakers. Its job is to amplify the audio signal from your audio device and outputs it a pair of speakers.

The audio setup showing where the Classique 6BM8/ECL82 SE Valve Amplifier would be. It is placed in between an audio device and a pair of speakers. Please note in the image, it shows multiple sources audio devices connected at the same time as an illustration. You can only connect one source at a time.

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

“Clear brilliant presence projection/soundstage separation and balance …”

See testimonials HERE.


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.


Still not sure? What about read the testimonials?


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

Basic Kit, Basic Kit + 2 valves


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