Finished Relay Volume controller / Balanced Potentiometer / Balanced preamp

Description

works voltage AC220V or AC110V for choose
Size：165*190*75mm  (W*D*H)
Pure resistors circuit, the sound is more transparent!
High grade double sided thickened gold plated PCB.
Left and right channel balance
accuracy 1%.
Product features and working principle:
the music signal channel all with the military 718 factory
resistors
, by adjusting the potentiometer (potentiometer without music signal, only control relays) control 16pcs (Japan imported TAKAMISAWA relay) switching
resistors
to complete 256
Step-by-step regulation, no explosive sound, pure
resistors
loop, higher than the traditional carbon film potentiometer fidelity!
Sound more transparent!
The effect of immediate impact!
Onboard integrated power transformer, no need to add another power supply.
Product Features:
Balanced input, balanced output.
Balanced input, unbalanced output.
Unbalanced input, unbalanced output.
Default not include the AC cable.
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 )
On Jun-07-18 at 07:56:36 PDT, seller added the following information: