"Röh-1" a DIY preamp 1991 update

[leakstereo20]

Today November 10th. 2025, I am very happy with the update on my tubepreamp from 1991, including new heater capacitor supply, new main power socket and new Wima MKP10 signal capacitors

Find it here: https://sites.google.com/view/tubeamp-dk/the-aurora/r%C3%B6h-1-tubepreamp

I can only recommend building this marvel of a tube preamplifier that brings out details and micro sounds, that I have never noticed or heard before. But keep in mind that the regulated low impedance power supply shown is the foundation of the entire amplifier.

It's a very fine day...rgds

K. J. Hansen /DK

Ps. I have build the 23,5 Watt RMS tubeamp, the "Röh-1" preamp, the modified UNI-Phase Beovox 3000 speakers and changed the laser in the Marantz CD63 mkII......I have a good share of all hifi devices that play ?

The modified UNI-Phase Beovox 3000 will be shown in another thread

[fetteler]

Very interesting, thank you for posting and here's to the next 30 years!

Steve.

[leakstereo20]

Originally Posted by fetteler

Very interesting, thank you for posting and here's to the next 30 years!

Steve.

Yes, I know....I am retired optician, but still can't stop thinking about new circuit's....

.. a DIY power amplifier without global feedback could be interesting?..I needed a poweramp for Edgar Villshur's AR11....
... my amateur website has just been updated with this non-feedback amplifier called ”The End” mk.4a....the Sanken ring-emittter's is what lazy speakers need

Find the amplifier here: https://sites.google.com/view/tubeamp-dk/the-aurora/the-end-mk-4a

Find the "Röh-1" tube update preamplifier here: https://sites.google.com/view/tubeamp-dk/the-aurora/röh-1-tubepreamp

rgds

Kim