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Old 26th September 2018, 12:15 AM   #291
nzlowie is offline nzlowie  Australia
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Hi guys, I'm thinking of ordering a board and tube from Pete's ebay store. Why, just want to try another buffer, I built the Mezmerize DCB1 buffer and its really nice! Could the Korg be better, only way to find out is to try one!
The main reason I'm using the buffer is that I load my DAC with 2 amps, HF amp has 100k input impedance but the bass amp is only 10k. The DAC designer recommends well over 10k, the buffer really does help the sound.

Read a lot of the posts here but didn't really see any discussing the audio virtues of this design. All I know is that if Nelson's had anything to do with it, it's gotta be worth a try.

So who's using one and how dos it sound??

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Old 26th September 2018, 06:59 AM   #292
irishpatrick33 is offline irishpatrick33  United States
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Well I did my part and contacted Korg. They literally couldn’t have responded any faster. The response was polite also. They basically said we’ll see.
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Old 26th September 2018, 09:17 AM   #293
Soundhappy is offline Soundhappy  France
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Quote:
Originally Posted by nzlowie View Post
Read a lot of the posts here but didn't really see any discussing the audio virtues of this design. All I know is that if Nelson's had anything to do with it, it's gotta be worth a try.

So who's using one and how dos it sound??
Preamp simulate SIT-1 and SIT-2 amp triode character, two vacuum tubes who "warm up" solid state amplifiers. Work fantastic with 20 dB of gain and dominant third H3 character of push-pull power stages. You get lot of questions answers and sound description in Mr Pass article http://www.firstwatt.com/pdf/art_nutube.pdf

and last year BAF talk, starting at 7 minutes 27

Burning Amp 2017 - Nelson Pass
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Old 2nd October 2018, 08:57 AM   #294
OnAudio is offline OnAudio
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Default Tube amp power on self test

Tube amps could benefit from having an additional cheap circuit that tested the tubes goodness before connecting inputs and output relays. There could be three status lights , change tube, burn in tube, good tube. These amps should always ship with 5- 10 years worth of replacement tubes , discuss and volunteer above circuit
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Old 2nd October 2018, 09:58 AM   #295
Soundhappy is offline Soundhappy  France
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It's very long life tube 30,000 hours and in preamp circuit do easy work
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Old 2nd October 2018, 12:19 PM   #296
Soundhappy is offline Soundhappy  France
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30,000 hours = around 20 ~ 30 years
1 hour a day use | 30,000 : 356 = ~ 82 years
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Old 2nd October 2018, 04:17 PM   #297
Soundhappy is offline Soundhappy  France
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Example if 3 hours every day = ~ 27 years
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Old 2nd October 2018, 05:17 PM   #298
Nelson Pass is offline Nelson Pass  United States
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B1 with Korg Triode
Long enough to become audiophile geezer.

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Old 2nd October 2018, 05:37 PM   #299
Soundhappy is offline Soundhappy  France
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Kindest regards
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Old 2nd October 2018, 05:46 PM   #300
MEPER is offline MEPER  Denmark
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…...we could also use the "real deal"?
But now I already have two Nutubes waiting for PCBs……..


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