Note: this is a DIY kit. all the Components will need yourself to solder it. ( the kit are not include tubes)
PCB size: 102*177*1.6MM
works voltage:
AC32-0-AC32V >=40mA
Filament voltage 0-AC9V >= 1A
The tube can use: 2pcs 6DJ8, 2pcs 6922, 2pcs 6H30P or 2pcs 6N11.
The signal is buffered 1:1, ( no gain)
（note: the defalut are not include these tubes)
Distortion: 0.008% (10Hz ~ 100KHz)
Frequency response: 10Hz ~ 100KHz (±0.2db)
PRT-09A tube buffer - base on the Classic Musical Fidelity X-10D circuit. (high-end version)
The Musical Fidelity X-10D is a buffer. The early design was mainly used to eliminate the "Digital taste" that produced by CD.to make the sound more close LP style.
Highlights:
1: PRT-09A uses a better parallel Class A regulated power supply and boosts the voltage to +/-36VDC
2:
The LT1085 regulator is used to supply power for the two tubes , which avoids the failure of the internal resistance of the
filament due to the different internal resistance of the filament.
3: Use VISHAY glossy glass-sealed rectifier
4: The main filter capacitor is Nikko KZ 1000uF
5: Transistor for power supply, Toshiba A970-C2240, A1358-C3421
6: Coupling capacitor adopts ERO series
we have the suitable transformer for this board. if you need. please contact us.
we can provide the clear PDF schematic via email.
The following assembled photos just for reference only!!!
Shipping time:
Default send by airmail,about 14-20 business days can arrive most of europe countries, Russia, Brazil,Africa.Ukraine and some other remote countries will need some more days.
Payment:
We ONLY accept PayPal. Payment must be made within 3 days of the auction end time. Non-Paying bidders will be reported.
All items will be shipped within 1-3 business days (from china)upon receipt of payment.
We ONLY send item to buyer's registered Paypal address,Buyer must be responsible for their postal address
Customs
& duties:For cross-border transactions,.we are not responsible for
tariffs and duties. However, buyers may be responsible for actual,
applicable tariffs, and duties as requested by respective country laws
Return & Exchange:
>> Some items return is accepted within 7 days after the buyer's receiving the item.(please see the detail describe)[In case of DOA (Dead on Arrival), please report within 3 days]
>> Returned item has to be new, unworn and in its original condition.
>>
After getting the returned item, we will refund the customer at the
item's price ( excluding the shipping costs to and from )