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If you need that one for the level translation in the RS-B965, either ZVP2110 or BS250P will work just fine. Cheers Alex

Here is one of the gems of my collection for a (reluctant) sale. Shortly I'll list it on eBay but here it is now. The deck is in a very good condition (some small blemishes), complete, including the cassette window and the (UK plug) mains lead, operational on the first glance (I haven't run it...

I use a computer based analyzer (RME sound card + AudioTester software) for most measurements on cassette decks or cassettes, however I own for many years and maintain in a good working order a hardware analyzer - Amber Model 3501 Distortion and Noise Measuring System. There are times when this...

You shouldn't be surprised, this phono stage could hold its own against any other up to $10K range, either valve or solid state from my experience. Cheers Alex

Unfortunately, Black Gate caps are out of production for many years. I kept some stock for Kora 3T Limited Edition phono stages, though I am not making these since 2014 (except an occasional request from a friend ;) ) . Cheers Alex

No longer for sale, Cheers Alex

Bipolar (Non-Polar) electrolytic caps can be happily used in place of polar caps as long as the maximum voltage is not exceeded. If the DC voltage on the capacitor is low and polarity is not known or variable (as could be the case in many opamp based circuits in audio equipment), than Bipolar...

I would advise you to get a mains supply as well, just to keep the unit powered all the time. Black Gate caps need at least 300 hours run-in to sound good and keep improving further with time, a short interruption in not a problem but otherwise it is good to keep it on. The current consumption...

On the other side of the board ;) . There are only three MOSFETs per channel, the circuit is described on my website. The version for Vincenzo is called "Limited Edition", using different (no longer in production) devices, giving about 6dB lower noise than the BSS139 in the standard version...

It is alive and working just fine. Cheers Alex

From memory, this head was used in RS-M253X, RS-B85, RS-B100. Cheers Alex

This 682ZX came to me in a very sad state, with bits missing from the transport and with many faults, most likely it was used for swapping parts. I've restored the transport (including a replacement head mounting plate), replaced one dead Dolby chip, replaced orange caps and did some usual...

ReVox and Nakamichi you say...

It appears that I have some genuine Black Gate ("Standard") electrolytic caps gathering dust. After checking the current prices on "that place" I am tempted to sell some of my stash and before posting it elsewhere I thought it would be good to invite offers here. The following is available...

From the first video, it looks like the scope program loses synchronisation (green light blinks) and it looks like a “jump”. It is not real. Cheers Alex

I know at least one for sure - Studer A820. I think some other models/makes also used HX-Pro. Cheers Alex

There is a good article about HX-Pro on my site (by its designers Jensen and Pramanik) http://www.ant-audio.co.uk/index.php?cat=post&qry=library Cheers Alex

Happy Birthday Nando!

Here. Cheers Alex

As far as I remember, that resistor adjusts the HF "shelf" in the recording EQ. Unfortunately I don't have time to measure and illustrate it on a graph at the moment. Cheers Alex