Author Topic: Valvesound Preamps  (Read 20753 times)

Offline fdlsys

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Re: Valvesound Preamps
« Reply #60 on: April 07, 2016, 11:39:39 AM »
Back to the finalisation of the Revelation 3 pre-amp.

I borrowed a set of Audeze LCD2's from Craig (itsCraig) and
after two days of listening to the "best headphones" I could get my hands on, I am happy with the headphone output of the pre-amp.  :groovy:
These LCD2's have a nominal impedance of 70 ohm and the pre-amp handled them extremely well. Lots of detail and in complete control of the drivers down to the lowest of frequencies.

I'll post some pics of the unit finally with its lid on and the phones tomorrow.
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Come back when you’ve lived a little. Miles Davis

Offline valvesound

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Re: Valvesound Preamps
« Reply #61 on: April 08, 2016, 09:48:03 AM »
Back to the finalisation of the Revelation 3 pre-amp.

I borrowed a set of Audeze LCD2's from Craig (itsCraig) and
after two days of listening to the "best headphones" I could get my hands on, I am happy with the headphone output of the pre-amp.  :groovy:
These LCD2's have a nominal impedance of 70 ohm and the pre-amp handled them extremely well. Lots of detail and in complete control of the drivers down to the lowest of frequencies.


I'll post some pics of the unit finally with its lid on and the phones tomorrow.







I don't know what went wrong with this post text size....but anyway I have now finalised the pre-amp after verifying it with a good set of headphones. The headphone output works / sounds really good with Craig's Audeze LCD2's.
So the lid is on and its done.
Please contact me if you are interested in any of my products to transform your enjoyment and experience of high end stereo

Offline juventino

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Re: Valvesound Preamps
« Reply #62 on: April 08, 2016, 01:07:38 PM »
 :drool: :drool: :drool: :drool:

Should be  :banned: for being audio porn
Time to get back to when I enjoyed listening......no more upgrading, more of a headache than a pleasure

Offline GECO

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Re: Valvesound Preamps
« Reply #63 on: April 08, 2016, 01:54:32 PM »
STUNNING!!

Offline Kent Kassler

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Re: Valvesound Preamps
« Reply #64 on: April 10, 2016, 09:54:38 AM »
Wow!....what a moment.....congratulations!
Audiophile Sound Sommelier Extraordinaire....aka Manic Depressive Temporary Void Filler Deluxe.

Offline xumbug

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Re: Valvesound Preamps
« Reply #65 on: April 10, 2016, 01:22:34 PM »
Nice one Valvie, must have a listen sometime. Congrats!!!!! :dop:
SDA Acoustics loudspeakers, Audio Research Ref 3 Pre amp and Ref 210 power amps, Bel Canto VB3.5 Dac, Pathos Endorphin cd player, squeeze box touch.

Offline scrarfussi

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Re: Valvesound Preamps
« Reply #66 on: April 10, 2016, 10:35:39 PM »
cant wait to sample this beauty
suum cuique pulchrum est


"Then Said my heart here will i take my rest."

Offline handsome

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Re: Valvesound Preamps
« Reply #67 on: April 11, 2016, 10:41:13 AM »
This is a magnificent looking build both inside and out. You are obviously also spending a lot of time of on the circuit design - rock on!

Offline valvesound

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Re: Valvesound Preamps
« Reply #68 on: April 11, 2016, 10:56:40 AM »
thanks all for the positive comments.


Yes handsome, a lot of effort has gone into the circuit design as a whole. It is a "simple" design. Simple meaning that there are very few components doing the actual amplification but applying the correct voltages for the operating points are crucial for best linearity and lowest distortion.
The power supplies are actually the most complicated in that they have the most components.
All in all it turned out very good and I am happy with the result.
Please contact me if you are interested in any of my products to transform your enjoyment and experience of high end stereo

Offline scrarfussi

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Re: Valvesound Preamps
« Reply #69 on: April 12, 2016, 09:16:59 PM »
enjoying my revelation 2 while saving up for the revelation 3  :dance: :dance: :dance: :dance: :dance:
suum cuique pulchrum est


"Then Said my heart here will i take my rest."

Offline valvesound

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Re: Valvesound Preamps
« Reply #70 on: April 13, 2016, 08:48:51 AM »
enjoying my revelation 2 while saving up for the revelation 3  :dance: :dance: :dance: :dance: :dance:


revelation 3 doesn't necessarily sound better than 2. It just has more features and sounds different  :thumbs:

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Offline itscraig

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Re: Valvesound Preamps
« Reply #71 on: April 14, 2016, 01:24:55 PM »
awesome pre-amp headphone amp, deep base great sound stage and dynamics
well done Willem, good luck with the product

Offline charles

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Re: Valvesound Preamps
« Reply #72 on: April 18, 2016, 11:31:16 AM »
Congratulations,

Excellent workmanship.

Offline valvesound

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Re: Valvesound Preamps
« Reply #73 on: April 19, 2016, 11:27:58 AM »
One other thing I would change are the screws holding the connectors.  Use non magnetic stainless hex or star.  It may sound better but will definitely look better too.


I was waiting for black counter sunk allen cap screws for the back panel. I received those and also got stainless steel non magnetic as you suggested. To be honest I was skeptical and decided that only if I can really hear a difference will I use them because the black does look so much better on the black background of the connectors.


Well last night I did the A/B testing......BEHOLD there is a noteable difference. It is especially noticeable with piano music. More musical, natural and true to life. So....the stainless steel screws it is then.


Here is a pic of both types used during the AB comparison. The stainless on the left two sets and the black steel on the two right input sets.



and here is how the final product looks.
Please contact me if you are interested in any of my products to transform your enjoyment and experience of high end stereo

Offline itscraig

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Re: Valvesound Preamps
« Reply #74 on: April 19, 2016, 06:10:33 PM »
must be your cables >:D