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I agree. I have such a product using KT88 and reports about performance is good, especially into Tannoy corner horns! It would be a small jump to KT150 tubes. The KT150 amp will probably have bigger output transformers to accommodate higher idle current and larger music output. PM me for pricing.

When it comes to 300B projects, it seems redundant to publish the circuit diagram. But if there is interest for completeness sake, I'll publish a schematic. Basically the build focuses of high quality Output transformers and superior PSU design. The rest is more or less canon.

Jozua, we have a product (Mars Exceller) built with the KT88 tetrode that gives a higher output than the 300b at half the cost. You can also switch the KT88 to triode mode for similar results to the 300B triode. Take into account that directly heated triodes (DHT) are legendary for their...

It is an excellent opportunity to buy up the quality stuff. My collection have doubled in size the past 6 months!

Maybe I should clarify a bit: builds like these (Single Ended Stereo Integrated) run from R19 900 (300B/2A3 tubes not included in price) upwards. Being a Boutique Amp shop, we'll build to your budget.

This is a R39 900 project. Final decision on tube brand to be decided. Tentatively Psvane 300B are going to be used.

Proposed look:

Hi All I am busy with a stereo 300B SET build for a client. If there is interest, I'll post the project details and progress here.

We'll be happy to supply components for your project. Send a PM when you are ready to discuss.

The ProAc's sound more forward (probably because of tweeter) compared to the Fostex. The Fostex sounds great overall. What is your impression?

I see the left top cap rubber got pushed into the grommet. Can you wiggle it forward so that it pushes against the top cap?

Our entry level tube amplifier has been upgraded and is now on offer to forum members and everybody who is interested. Forum members get a 10% discount for this great sounding desktop amplifier. selling price: R15 900 delivery 30 days after submitting order 66% deposit secures the order...

Just a note to prospective buyers: the "Sweet 16" with upgrades (transformer iron to M6, hiQ connectors and sockets/top caps) are now selling for R15 900. Our current favourite coupling capacitor is the EVOX RIFA 0.22uF paper capacitor. Requests welcome.

Hi Jozua, I check interaction earlier in the thread. Have a look at the results there. If the orientation of the transformers are correct, the magnetic interference is minimal. Definitely way below audible level.

She plays music!

What form of Vit B do you prefer? I've had good results with a Vit B complex fizzy tablet made by NRF. B-Complex

By the way, for those interested: this unit consumes about 150 Watts when operating.

Power transformer mounted. Awaiting delivery of M6 laminations for output transformers.

Completed rolling of two output transformer bobbins

Thanks for the discussion! I run a linux PC network at home and the FLAC format works for me. Mostly Debian Mate, but Ubuntu here and there too. I use Rhythmbox as a mediaplayer with an outboard DAC as an audio source. This works great for my setup. I cannot find fault with flac, but I keep my...