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Pure Tube i/V for ES9038PRO-9028, 9018, AKM...

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quanghao

quanghao

Member
Joined 2009
quanghao.com/
#1
Hello all friends!

After many years of using ES chips, we have experienced with DAC, ES9018S, ES9038PRO.

We are glad to announce to you that we have succeeded in designing the output for ES9038PRO, undergoing over 15 different designs, we chose the best design to share for you. Yes, you can make yourself a DAC with pure tube output.

I call it: Pure Tube i / V balanced.

Andrea-Quanghao-Morten would like to share our design with you!
Sincerely thank you.

1. Pure tube I/V- Balanced Output
Pure tube I/V PCB
Best design from our 15 design IV.
You can use for:
ES9038 DAC
ES9028...
AKM4497.....
♥ PCB dimension: 19.5 x 19cm
♥ PCB thickness: 1.6mm, double layer,
2oz copper.
♥ Symmetric layout design and signal paths with minimum
parasitic.
♥ Dedicated ground and power rails layout design.

Tube need use :
♥ Input: 2 x 12AU7
♥ Output: 2 x 6DJ8 or E88CC
♥ Cap Output: 4 x 1µF
♥ Simple R/IV

price: 45$



EX:

And Pure i/V schematic L:

656922d1515980825-pure-tube-es9038pro-9028-9018-akm-sch-pure-iv-tube-9038pro-jpg


And Pure i/V schematic R:

656923d1515980825-pure-tube-es9038pro-9028-9018-akm-sch-pure-iv-tube-9038pro-jpg


And Pure i/V schematic Relay:

656924d1515980825-pure-tube-es9038pro-9028-9018-akm-sch-pure-iv-tube-9038pro-relay-mute-jpg


2. HQ-Hv Supply for Tube IV
Output:
1. Positive voltage:
♥ 100-270VDC.
2. Negative voltage:
♥ 100-270VDC.
♥ Low noise , Low Z-out
♥ Use mosfet

3. Filemant Tube: 6.3VDC
to 12VDC/3A.

price: 35$

And Hq-hv schematic:
656925d1515980825-pure-tube-es9038pro-9028-9018-akm-schema-supply-hv-pure-iv-jpg



And schematic Filemant
656926d1515980852-pure-tube-es9038pro-9028-9018-akm-schema-filament-supply-pi3-jpg




Shipping by transport envelope for all countryll contry: 25$.
Payment by paypal: quanghao168@yahoo.com.vn
Paypal free: 2%.
 
Last edited:
#2
Ok, I guess I am the first one on the list?

Calixto Deveza
Main Board $45.00 with Output Cap 4 x 1uf - $??
Power supply Board $35.00 with 3 Heat Sinks and Connectors - $??
Shipping $25.00
Total $105 + Additional components
 
#5
quanghao said:
HI!


Heat Sinks = 3.95 $ / 1pc = 11.85

And: 1uF/450V Cap output (MUNDORF-76452 1µF / 450V, Mcap EVO - Silver / Gold & Oil) In PCX 31.08 $/Pc.

So 4 cap= 124.32 USD

Toltal :116.85 + 124.32= 241.17 USD

if you ok all, today i ship from partsconnexion.com

thanks
Quanghao
Click to expand...

Ok, I will pay you paypal, please, what is your email on paypal?

Where do I get those connectors you use?

Alex
 
#20
Quanghao,

I just got the Boards, thank you. Are you going to publish the correct schematic for the Tube Output? the one with the 4 tubes? instead of the 3 tubes? Also, the schematic for the power supply. The one that is posted has no link to the schematic. Can you please check, so we can start building this Tube Output?

Alex Deveza
 
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