My Pi 5 streamer with built-in TDA1541 and tube output

[Vincent_Fong]

Took me a few months to build from scratch.

Analogue Specifications:

• Full galvanic isolation
• Single or dual TDA1541(A), TDA1387 (x4) or TDA1543 (x1)
• Nichicon FW caps array (47,000uF/35V) for digital circuitry
• Nichicon MUSE caps array (9,000uF/50V) for analogue circuitry
• Rubycon 110uF/500V x2 high voltage caps
• WIMA MKP10 decoupling capacitors
• Samsung C0G (NP0) and X5R SMD capacitors
• 0.1% 25ppm metal film resistors for general circuitry
• 0.01% 5ppm metal foil resistors for passive I/V conversion
• 0.22uF/400V copper foil caps for coupling
• 85% permalloy audio transformers (10K:20K)
• Tube output stage (ECC88/6DJ8/6922/CCa, Class A)
• 1K output impedance (RCA direct out)
• 2.8Vpp output (RCA direct out)
• Configurable balanced or unbalanced XLR output

Power Supply:

• 2x 50VA audio grade R-type power transformers
• 7x individual LPS (all with CLC filtering)
• 3x individual ground planes
• Soft start for heater (6.3V/5s) and B+ (96V/20s)
• RC Snubber networks

[Vincent_Fong]

[Vincent_Fong]

[Vincent_Fong]

[Vincent_Fong]

[nickr]

Nice build. Where did you get the case?

[Vincent_Fong]

Thanks
The case was manufactured based my drawing

[nickr]

Who manufactured it?

[Vincent_Fong]

A small aluminum factory

[Is3]

Vincent Awesome project!
Very, very nice 97’ TDA I also have one from that year. My DAC is Audial S5.

[Vincent_Fong]

@Is3

Audial S5

Thanks. Fell in love with TDA1541(A) and made several streamers based on that DAC.
Was lucky enough to purchase a few of old 87’ TDA1541 DAC. Although TDA1541A has a better specification on paper, TDA1541 sounds better in my ears. Just give it (TDA1541) a try with your Audial S5.