Reference DAC PSU
for Red Baron / Tube-I-zator











Custom made "Galaxy" housing with 10mm front panel from modushop.biz

Custom made Transformer with double C-cores, made for Vacuumschmelze Germany for Siemens military equipment

Tube-Rectifier circuit (6106/GZ34 or equivalent) with High-End Parts for B+ of the Tube-I-zator

The C-L-C-R-C Network with no electrolytic caps!

Yamamoto Teflon socket

The new Tube-I-zator V3.1



The evolution brings the following changes:

- Anode PSU with Salas SSHV Shunt Reg. onboard
- External B+ Input for usage with other Anode PSU
- Heater PSU with C-R-C filtering
- Heater PSU with Softstart circuit
- Heater PSU Power LED

- Design failures corrected

Thanks to John (-ecdesigns-) for the following suggestions!

- Grid stoppers to prevent unwanted oscillations
- Bias current injection for TDA1541A usage
- Pull-down resistors to keep the coupling cap output at GND-potential

Still on the Module:

- Heater switch for 6N2P or 12AX7 usage


An example for a balanced use (e.g. Bufalo II), you could see HERE.



The PCB has the following data:

Material: FR4 - 2mm

Attached Files

	Tube-I-zator V3.1 - BOM.xls.zip (7.3 KB, 932 views)
	Tube-I-zator V3.1.pdf (835.7 KB, 2105 views)

From today you will find high resolution pictures

of all my projects at my

flickr

Webside

The evolution brings the following changes

- Jumper for I2S / simultaneous mode
- latest 3.3V attenuator for I2S & simultaneous mode (by -ecdesigns-)
- free running DEM oscillator (by -ecdesigns-)
- additional U.FL pads for I2S & simultaneous mode
- Separate U.FL-GND route to Digital-GND


Still on the module

- Separate I2S-GND route to Digital-GND
- Separate Analog Output GND route
- Separate GND route for active divider decoupling caps to Analog-GND
- Modified active divider decoupling pads for better SMD 1210 caps soldering
- Un-interrupted ground plane
- Direct shunt voltage inputs with shortest onboard traces
- I2S In-/Outputs with shortest onboard traces
- Onboard Grounded-Gate MOSFET Current Buffer I/V Stage

Attached Files

	Red Baron V5.0.pdf (29.7 KB, 2588 views)
	TDA1541A Project - BOM - for The Red Baron V5.xls.zip (9.2 KB, 1678 views)

TDA1541A DAC Module




- separate TL431 Shunt regulators for each voltage line
- independent voltage rail for the DEM reclock circuit
- I2S attenuator circuit
- shortest possible position for decoupling caps
- separate ground line for decoupling caps
- Ground plane
- 2mm pcb
- Immersion Gold
- green soldermask on both side
- 35µm copper weight
- Board size 125mm x 125mm

in Stock

The price is:

TDA1541A DAC Module: $9

Worldwide shipping: $ 9
Europe shipping: $ 5
paypal fee: 3,9%

Shipping insurance on buyers request!


----------

The Ultra High Speed Buffer Module will be shipped "ready to use",
with three NC7SZ125 chips

Attached Files

	Reference TDA1541A DAC V2.3.pdf (559.7 KB, 845 views)
	TDA1541A Project-BOM-Final.xls.zip (8.0 KB, 266 views)
	Takamisawa NA-Type.pdf (153.3 KB, 1052 views)

My last dream come true!

The output cap upgrade to the holy grail...



DUELUND´s CAST PIO Copper Cap!






Therefore the Tube-I-zator must go to the 2nd floor






Sound review

Now after ~150 hrs. burn in time, i will share my impressions with these outstanding caps.

I had a déjà vu after changing from my previous Mundorf Suprem silver/gold/oil caps to the Duelund CAST PIO Copper.
The same difference as in my 300B mono block´s.

This openness, clarity, three-dimensionality with so many more subtleties and micro informations, absolute breathtaking.
Only the Duelund CAST has

Tube-I-zator V3.0



The evolution brings the following changes:

- Anode PSU with Salas SSHV Shunt Reg. onboard
- External B+ Input for usage with other Anode PSU
- Heater PSU with C-R-C filtering
- Heater PSU with Softstart circuit
- Heater PSU Power LED

Thanks to John (-ecdesigns-) for the following suggestions!

- Grid stoppers to prevent unwanted oscillations
- Bias current injection for TDA1541A usage
- Pull-down resistors to keep the coupling cap output at GND-potential

Still on the Module:

- Heater switch for 6N2P or 12AX7 usage


An example for a balanced use (e.g. Bufalo II), you could see HERE.



The PCB has the following data:

Material: FR4 - 2mm
Layers: 2
Board size: 193x157 mm

Attached Files

	Tube-I-zator V3.0.pdf (30.2 KB, 1426 views)
	Tube-I-zator V3.0 - BOM.xls.zip (7.6 KB, 900 views)