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Orders for 2023 open... Choose your colour, place your order and we manufacture.

Here is an Exceller with copper covers and a headphone output: The pots next to the inductor mounted in front controls the amount of negative feedback employed in the circuit. These pots can also adjust the balance of the two channel's relative loudness. We used jumpers to switch between...

Here I agree. If you need a solid connection between say an unearthed tube mono block and an earthed stereo preamp, RCA's can be troubling when the connection is not good. Here XLR clicks in with a proper connection that will not come undone by regular use.

It seems the other block is more in spec' with the ECC82 anode to cathode voltage reading 250V. If I get more data on the circuit, I'll address this issue. So far the project is a success with all aspects of the circuit operating. Even the soft start relays click in unison when the power is...

Thanks F_D, I have seen that schematic. These two blocks have two ECC82 (triodes paralleled) cathode followers as drivers originally (one for each bank of 4 PL519's). The differential driver driving them are DC connected to the cathode followers. (No connection from anodes to PSU)

I am restoring a set of Steinhart monoblocks. The job is quite extensive: the metal enclosure was repainted and the electronics upgraded. I took some photos. I cannot locate the "before" photo of the complete unit. Here are some shots from the restoration process: First job was to strip the...

Sweet 16 No 3 is done! This unit was fitted with a remote volume control. Space was limited, but the SRPP circuit lends itself to compact wiring!

Hi All I have this beauty on my table for restoration. Can anybody help me with a button for the front panel?

Please note: we have changed our PSU configuration to Choke loaded input filter (no capacitor in front of 10 Henry inductor) and the photo flash has been upgraded to polypropylene capacitors.

Back view:

Certainly: View from bottom

We have a limited special on the DIY Kit 2 amplifier kit. Complete kit with Shuguang KT88 output tubes selling for R11 900.00 This kit can be constructed under expert guidance at our workshop in Paarl by arrangement. PM us for costs dates. PM for availability or custom requests.

We are offering our popular single ended stereo amplifier at a discounted price of R19 900.00 per unit 16 watts per channel class A sound from Ultra Linear output transformers with 43% taps manufactured with M6 grain orientated steel. manufactured one at a time with point to point wiring in...

Hi All, we can also offer remote volume control on the unit included in the price. Contact us for details. Basic amp without upgrades is still available @ R11 900 per unit to forum members.

sercoe, are your JJ's more than 150mm?

Good point F_D. I've decided against recessing the tubes. I noted the teflon sockets can grab the tube pins quite firmly. Then a 180mm clearance between tube socket and top of cage should be sufficient.

I am busy finalising the drawing of the enclosure. Some design issues came up: I had to increase the box height to accommodate the VU assembly. Height now 90mm. the tube cage must be high enough to cover the 300B tubes with some clearance between tube and top of cage. How high is a 300B tube...

Nice list Sarel. Quite a few of my favourite recordings. But... the Bach Cello Suites by Pablo Casals were recorded in mono if I am not mistaken?

Those two loudspeaker drivers in the radio looks interesting!