DIY Hifi 12AU7+12AX7 Tube preamplifier board / stereo Tube preamp kit L13-1

Description

if you choose the "DIY kit" all the parts will need solder by yourself!!
In response to some shortcomings of the traditional Marantz 7 circuit, the Japanese
Hetian Mao
improved on the Marantz 7 circuit. The improved circuit is called the Hetian Mao circuit. Its main feature is to replace the cathode of the Marantz 7 circuit with the SRPP circuit. The follower does not have any voltage amplification due to the SRPP output stage. It is only used as a buffer stage. It has a stronger driving load than a normal cathode output. In terms of tone, it maintains the Marion 7 line IF sweet. Features, its analytical power and high frequency low frequency response are better than Marantz 7, high signal to noise ratio.
PCB Size: 155X122MM
works voltage:   0-AC240V   (this voltage 200-260V are all ok)（above 30mA)
0-AC6.3V    (1.5A)
0-AC12V   （1.5A）
using tube: 2pcs  6Z4    2pcs 12AU7  and 2pcs  12AX7
(the default price are not include any tubes)
Frequency response: 20HZ-30KHZ
Input sensitivity: 300MV
Signal to noise ratio: 98DB
we also have the suitable transformer and case for this board.if you want buy. please contact me.
The following photo are our finished amp photos(
for reference only):
Shipping time:
Default send by airmail,about
10
-18 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 )
On Jan-12-19 at 23:22:05 PST, seller added the following information: