As new in immaculate condition - 2 weeks old - £SOLD shipped in UK
220V input
"VALAB NOS-DAC TDA1543 --- simple elegance
All NOS-DACs are simple. because these old NOD dac chips are so small and simple IC with few pins and only need simple circuit to work well.
TDA-1543 may be the most small but tough one. It is a real vintage chip developed by Philips 2 decades ago. We choose it to implement our own NOS-DAC.
No special innovation on this chip for it is too simple. What we should do is try to extrapolate its most potential! How?
1. Keep most accurate digital signal and feed to TDA1543 in low jitter fashion.
DIR9001 digital receiver is the answer for this propose. DIR9001 is a new modern IC, much more expensive than that popular CS8412/4/6 used in all other DAC. Much more music details keep and accurate sound you obtain.
2. Paralleling DAC chips.
We parallel up to 8 TDA1543 chips as you see on Fig. 4. 8 paralleling did enhance performance, get better resolution and lower output impedance.
3. Profuse power supply
10W sealed military grade power transformer was used in this DAC, it can offer up to 5 times required electronic power. No vibration, heating from this transformer. In rectification circuit, we use best sound 1n5062 diode, this is most credit diode which is popular in audio tweaking. It do signicifantly improve sound quality, more smooth and natural sound. Expensive LT1084 5A voltage regulator and Rubycon capacitor were used in power supply section to offer clean and low drop voltage to tda1543 and dir9001 chips.
4. USB receiving for computer based source
We incorporate USB receiving capacity to our new version of 1543dac. Unlike other USB dac use pcm170x chip which integrate USB receiving and dac in one chip, which is very low cost and low performance. Our approach of USB DAC use very delicate design, using independent USB receiving chip and get I2S digital signal feed into TDA1543 chip.
5. Precision Clock
In order to get best quality digital signal for TDA1543 chip, we integrate independent precision clocking and redata circuit for digital receiving. You will never find any commercial NOS DAC have so dedicate digital design. No matter what price they sell! We invest our best efforts to extrapolate potential of TDA1543 chip. Our implementation may be best TDA1543 based DAC in market.
We custom order 1ppm 12.0000Mhz TCXO for our most update version to fulfil our promise for building best sound NOS DAC.
In Figure 3, 4 and 8 are our new expensive precision 1ppm 12.0Mhz TCXO, it will be base part in this dac.
This must be most effective and expensive upgrade we ever applied on this product.
6. Good signal/noise ratio
This dac may be best S/N ratio 1543 based DAC. Almost no hiss, humming from it, even you use most sensitive speaker or headphone, you will hardly hear any noise at loudest volume.
7. After several month of selling this dac, we accumulate many know how in parts choice from our customers. Key components usage list below.
a. First stage filtering capacitors: Three Rubycon XYF 1000u/35v Long Life/Low impedance 105 degree C tolerance
b. Decoupling capacitors for digital circuit chips: Eight PSC-470uf 16V solid polymer (os-con) Low ESR/Low impedance 105 degree C tolerance
http://www.chemi-con.com/files/PSC.pdf
c. Decoupling capacitors for TDA1543 chips: Eight NEC TOKIN 10uf/25v SMD type capacitors, one for each tda1543 chip
d. Adjustive capacitors for voltage regulator: Two Rubycon XYF 25uf/25v Long Life/Low impedance 105 degree C tolerance
e. Analog output output capacitor: Two metal can Tantanium 10uf/16v
f. Digital input coupling capacitor : Two metal can oil filled 0.01uf/200v
8. 2009 new version with new layout by Taradac research group, significantly shorten signal path and use chassis chassis as heatsink, it will have much better heat dissipation efficiency, keeping dac chip cooler and long time stable."
220V input
"VALAB NOS-DAC TDA1543 --- simple elegance
All NOS-DACs are simple. because these old NOD dac chips are so small and simple IC with few pins and only need simple circuit to work well.
TDA-1543 may be the most small but tough one. It is a real vintage chip developed by Philips 2 decades ago. We choose it to implement our own NOS-DAC.
No special innovation on this chip for it is too simple. What we should do is try to extrapolate its most potential! How?
1. Keep most accurate digital signal and feed to TDA1543 in low jitter fashion.
DIR9001 digital receiver is the answer for this propose. DIR9001 is a new modern IC, much more expensive than that popular CS8412/4/6 used in all other DAC. Much more music details keep and accurate sound you obtain.
2. Paralleling DAC chips.
We parallel up to 8 TDA1543 chips as you see on Fig. 4. 8 paralleling did enhance performance, get better resolution and lower output impedance.
3. Profuse power supply
10W sealed military grade power transformer was used in this DAC, it can offer up to 5 times required electronic power. No vibration, heating from this transformer. In rectification circuit, we use best sound 1n5062 diode, this is most credit diode which is popular in audio tweaking. It do signicifantly improve sound quality, more smooth and natural sound. Expensive LT1084 5A voltage regulator and Rubycon capacitor were used in power supply section to offer clean and low drop voltage to tda1543 and dir9001 chips.
4. USB receiving for computer based source
We incorporate USB receiving capacity to our new version of 1543dac. Unlike other USB dac use pcm170x chip which integrate USB receiving and dac in one chip, which is very low cost and low performance. Our approach of USB DAC use very delicate design, using independent USB receiving chip and get I2S digital signal feed into TDA1543 chip.
5. Precision Clock
In order to get best quality digital signal for TDA1543 chip, we integrate independent precision clocking and redata circuit for digital receiving. You will never find any commercial NOS DAC have so dedicate digital design. No matter what price they sell! We invest our best efforts to extrapolate potential of TDA1543 chip. Our implementation may be best TDA1543 based DAC in market.
We custom order 1ppm 12.0000Mhz TCXO for our most update version to fulfil our promise for building best sound NOS DAC.
In Figure 3, 4 and 8 are our new expensive precision 1ppm 12.0Mhz TCXO, it will be base part in this dac.
This must be most effective and expensive upgrade we ever applied on this product.
6. Good signal/noise ratio
This dac may be best S/N ratio 1543 based DAC. Almost no hiss, humming from it, even you use most sensitive speaker or headphone, you will hardly hear any noise at loudest volume.
7. After several month of selling this dac, we accumulate many know how in parts choice from our customers. Key components usage list below.
a. First stage filtering capacitors: Three Rubycon XYF 1000u/35v Long Life/Low impedance 105 degree C tolerance
b. Decoupling capacitors for digital circuit chips: Eight PSC-470uf 16V solid polymer (os-con) Low ESR/Low impedance 105 degree C tolerance
http://www.chemi-con.com/files/PSC.pdf
c. Decoupling capacitors for TDA1543 chips: Eight NEC TOKIN 10uf/25v SMD type capacitors, one for each tda1543 chip
d. Adjustive capacitors for voltage regulator: Two Rubycon XYF 25uf/25v Long Life/Low impedance 105 degree C tolerance
e. Analog output output capacitor: Two metal can Tantanium 10uf/16v
f. Digital input coupling capacitor : Two metal can oil filled 0.01uf/200v
8. 2009 new version with new layout by Taradac research group, significantly shorten signal path and use chassis chassis as heatsink, it will have much better heat dissipation efficiency, keeping dac chip cooler and long time stable."
