Little bear P5-1 tube valve puffer Preamp Preamplifier amplifier ver1.2
Upgrade log:22/04/2015:
Solved some of preamp both channel not balance or one of channels get huming noise or sound too lower problem, now. the new version is all upgrade it. those bug was fixed. at before ,those problem usually happen on connect to cellphone or Ipod player but connect to CD or decoder all work fine.(one more thing, someone who bought this item before. and meet that problem. please message to me. i will sent the mod circuit to you. and you can fix it by yourself. easy to fix it.), in the end. if any suggestion of this preamp please let me know. we will keep moving to upgrade it.
Newest version.start sale at: 23-Oct-2014
TIPS:when you got the package. you need assemble the preamp board into blue box by youself. it's easy. then you can use it. (the list picture is assembled. just for refer.)
Package included: 1 x Solder finished preamp board 2 x Peking 6J1 tube 6 x Panel(assemble to a box),4x screws 1 x Transformer 110V or 220V,output AC:18V/1A,(i will sent correct model to you by your address(country),with EU/UK/US/AU plug for choice)
It's new version. same function.there is few options different then before version1.0
1, Re-design the PCB. better shape, and PCB is GOLD PCB. better for signal transmission
2, Custom special transformer for this preamp. with a plastic shell, more safe. and better for use. before we using a pure transformer . without shell. and short power cable.
3, Design a box for the preamp. as the picture. it's beautiful, more secure, dust-proof design
It's a very cool preamp.
1,PCB Circuit layoutis reasonable and beautiful,minimize noise,warm sound,perfact for listen person singing.
2,About the input and output interface.all using GOLD RCA interface.
3,Best for your desk headphone amplifier or home power amplifier.make the sound more warm.
else.becaue is tube preamp.usually the amplifier need warm time about 5-10 minutes,after can work in perfact status.
NOTIC:for some new HiFi fans,the Preamp is not like power amplifier,you can not direct connect it to your speaker or headphone.need connect it to Power amplifier.
If you are US,RU,GB,AU buyer,we will ship item to you by USPS express.6-10 days arrval ,other country buyer.this item will ship to you by Register mail.with tracking number.usually 2-4 weeks arrival
