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Is anyone building the KGSSHV?
- Thread starter verwandlung
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jcx
Headphoneus Supremus
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Quote:
a detail but noise from the 400 Ohms of source degen/feedback R is larger
and while many source may still work best with analog volume control the picture is changing
several DACs with >120 dB dynamic range are available now - for some of these it no longer makes any difference as long as 24 bit PCM is driving the DAC - and even Windows can now be set for 24 bit output even with 16 bit source: the digital volume control math quantization at 24 bits output is way below any electronics noise floor
and headphone listening doesn't reach the 0 dB SPL anechoic chamber threshold due to mechanical motion "microphonics"
since ES headphones can't reach 120 SPL, hearing noise floor with headphones on is ~ 10 dB SPL then we really don't even "need" 120 dB dynamic range with good system gain structure
Noise at full volume is usually fixed with 100 ohms in series with the wiper of the volume control.
To maintain full signal to noise, the volume control is usually a good idea. Then you turn up to
full blast the dac, and adjust the volume control for just past your maximum listening level.
a detail but noise from the 400 Ohms of source degen/feedback R is larger
and while many source may still work best with analog volume control the picture is changing
several DACs with >120 dB dynamic range are available now - for some of these it no longer makes any difference as long as 24 bit PCM is driving the DAC - and even Windows can now be set for 24 bit output even with 16 bit source: the digital volume control math quantization at 24 bits output is way below any electronics noise floor
and headphone listening doesn't reach the 0 dB SPL anechoic chamber threshold due to mechanical motion "microphonics"
since ES headphones can't reach 120 SPL, hearing noise floor with headphones on is ~ 10 dB SPL then we really don't even "need" 120 dB dynamic range with good system gain structure
El_Doug
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Lil' Knight
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Neat
gilency
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El_Doug, your amp is beautiful!
spritzer
Member of the Trade: Mjölnir Audio
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Very nice indeed.
I was doing some inventory and I found 3 KGSSHV transformers so I guess I'll have to get cracking on some more amps.
First we need to finish these two new volksamp projects though...
Quote:
Been on mine for years but this was too stupid to ignore.
I was doing some inventory and I found 3 KGSSHV transformers so I guess I'll have to get cracking on some more amps.
Quote:
ignore list expanded
Been on mine for years but this was too stupid to ignore.
kevin gilmore
Señor Stax. Señor MAXX.
Can Jam '10 Organizer
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Nice amp indeed, definitely like the back panel
Hopefully production Teflon stax jacks soon
Quote:
I was referring to the noise some dac's make when they drive the input capacitance of the jfet directly
with no series resistance. Reading HDman's comments now, i think he was talking about something else.
Hopefully production Teflon stax jacks soon
Quote:
a detail but noise from the 400 Ohms of source degen/feedback R is larger
I was referring to the noise some dac's make when they drive the input capacitance of the jfet directly
with no series resistance. Reading HDman's comments now, i think he was talking about something else.
verwandlung
Now known as satorarepotenet.
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Quote:
This looks very nice, refined, sober, with the name on the back! How many of them are you planning to build again?
This looks very nice, refined, sober, with the name on the back! How many of them are you planning to build again?
El_Doug
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Thanks for your kind words, everyone! There actually will be a "KGSSHV" on the front, it is on the faceplate of the power supply (same size box). However, just like the amp, the PSU front panel will be covered with black enamel and a matte clearcoat (just primed it tonight, actually) - thus the engraved "KGSSHV" will appear as a textured relief, but will not be a different color.
It'll look even better once I get my wife to use her camera + photography skills, instead of my point-and-shoot technique with my cell phone
It'll look even better once I get my wife to use her camera + photography skills, instead of my point-and-shoot technique with my cell phone
Quote:
Is this an onboard or offboard build? Pics of the insides too please
Thanks for your kind words, everyone! There actually will be a "KGSSHV" on the front, it is on the faceplate of the power supply (same size box). However, just like the amp, the PSU front panel will be covered with black enamel and a matte clearcoat (just primed it tonight, actually) - thus the engraved "KGSSHV" will appear as a textured relief, but will not be a different color.
It'll look even better once I get my wife to use her camera + photography skills, instead of my point-and-shoot technique with my cell phone
Is this an onboard or offboard build? Pics of the insides too please
El_Doug
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Quote:
offboard, of course
Is this an onboard or offboard build? Pics of the insides too please
offboard, of course
Quote:
Very nice, what relay switching board are you using for the input selection?
offboard, of course
Very nice, what relay switching board are you using for the input selection?
kevin gilmore
Señor Stax. Señor MAXX.
Can Jam '10 Organizer
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I like it even more after that last picture.
Victor Chew
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Very nice . Any PS pictures?
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