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Old 2nd April 2013, 02:46 PM   #3101
iko is offline iko  Canada
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I'm glad you're enjoying it, see, it was worth the effort. Regarding the VR150 I'd like to say that when I used it with a resistor instead of the CCS (upstream) the preamp had a certain shhhhh noise. With the CCS that noise is gone.
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Old 2nd April 2013, 02:51 PM   #3102
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Quote:
Originally Posted by merlin el mago View Post
26 is the most musical preamp I have listened and I listened several (40 years).
Tempting. Maybe I should dig mines up. Congratulations Felipe
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Old 2nd April 2013, 03:09 PM   #3103
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Quote:
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Tempting. Maybe I should dig mines up. Congratulations Felipe
Thanks stajo, let us know when you start your 26.
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Old 2nd April 2013, 03:11 PM   #3104
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Quote:
Originally Posted by iko View Post
I'm glad you're enjoying it, see, it was worth the effort. Regarding the VR150 I'd like to say that when I used it with a resistor instead of the CCS (upstream) the preamp had a certain shhhhh noise. With the CCS that noise is gone.
I didn't compared vs SSHV2 but CCS+VR150 is very good sounding and no noise configuration
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Old 2nd April 2013, 03:18 PM   #3105
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A discrete shunt regulator like the SSHV2, in my opinion, will shine when there's more variation in current, on account of its low output impedance. I've a big fan of shunt regs, as you may know, and I've dedicated a significant amount of time to improve on Salas' initial design. The VR tubes don't come close to the discrete shunt reg as far as low output impedance is concerned.

Edit: for a 4P1L, 6V6, D3A, or any other tube that draws more than 10mA current I'd be more tempted to use a discrete shunt reg. I think it'll behave better on transients.
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Old 2nd April 2013, 03:21 PM   #3106
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I asked Salas and told me VR150 are more noisy.
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Old 2nd April 2013, 03:30 PM   #3107
iko is offline iko  Canada
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He is right, the shunt reg will measure better, it has much better line rejection. But do you hear the noise of the VR tube in this application?
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Old 2nd April 2013, 03:30 PM   #3108
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Old 2nd April 2013, 03:37 PM   #3109
iko is offline iko  Canada
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Exactly. If you build a phono preamp using a D3A in the first stage then I would strongly recommend that you use a discrete shunt regulator.
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Old 2nd April 2013, 05:36 PM   #3110
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Time to save money for next project: all DHT headphone amp?
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