Quick guide for this T10 normal version(for new buyer):
This is normal version. PCB board is Ver2.2 for now, and board with change tube model switch (6N2/12ax7 tube mode), but without GAIN switch,default package EI transformer and 6N2,plug 2 panels,other different is . Ver2.2 not Integrated the EMI filter function part in board.so. you need connect by yourself. as the follow picture.else. this product isn't 100% assembled,just PCB board is assembled, when get package. you need wire-weld transformer to PCB board. and put both panel on PCB board, then you can use it.it's easy. just refer the list pictures.
NOTIC:for MM (Moving-MaganeticCartridge) turntable only.do not support MC truntable, also not support CD or other similar player
Upgrade log: 25th-Dec-2014, we just solved the hum noise problem. now. the sound is very quiet. I promse~..about some of buyer already brought this item before. you also can buy the part to upgrade your phono preamp. (and about the new buyer. we will free package this EMI adapter in package. you need solder the cable to the EMI adapter buy yourself.)
|This is the newest pure valve phono preamplifier. This class A preamplifier provides a beautiful and very warm sound output. Gold interface - I tested it with my old classic Pioneer turntable and the music reproduction is fantastic, better than the T9 model. The sound is warmer, clearer with a lower background noise. It will not let you down.This is the real HiFi version. If you previously owned a turntable - now it's time to revisit the classic!|
And about some buyer respond the hum noise problem.
In normal,there is some low humming noise.not loud.(because the phono preamp is amplifier the signal to about 800-1000 times,the MM source signal voltage is 3~5mV,MC source is 0.5~0.8mV,need amplifier up to 1.2~2V,(so,if any noise in the signal,it's will be same loud too.)
you can try follow step to be sure is in lowest.
1,Must be sure the the GND point is connect to real earth.you can test it.using your finger touch the GND point. is the humming noise come to lower?if yes.that's mean the GND cable not in good connect,if the humming noise is same,no change lower.that's good.
2,Using some better audio connect cable,and move this valve preamplifier little far from power or TV or other Electric device.
3,Connect the transformer case box to GND too.
Q: Some buyers ask me : why not build a metal box for this phono preamp?
A: If using a metal box, the price will increase to 280+USD, so many country's HiFi Fans cannot use it, because by using metal box, the amplifier would weigth more than 3KG, then we can not sent it by normail registered mail.(registered mail accepts packages weighing less than 2KG only).
If using express shipping model(FedEx EMS), the shipping fee is expensive too, so it's not as cost efficient to use metal case. Metal case is available for a few counrtries only, but I think I need to share this preamplifier to more fans like me and that's way we use the acrylic panel, this way the unit can weigh less than 2KG.
If you're a DIYer, you can build a metal case by yourself. we can provide the dimensions file to you:)
I'm pleased with my design - I hope you enjoy it.
1. It's a pure valve phono preamplifier. Sound is warm and classic, clearer and truer sound is restored.
2. Using 45VA customization E model transformer, with metal cover, low noise.
3. Coupling capacitors all using HiFi WIMA audio capacitor, best model. Very low noise and clear sound output.
4. 3x 6N2 tube(low noise tube) +1x 6Z4 tube.
RIAA phono stereo
the transformer with 110~120V and 220~240V both version. i will sent correct version to you by your address.
RIAA freq response 20hz-20kHz +/- 0.5dB, S/N ratio >92dB
THD <0.05%, input sensitivity 3.0mV, gain 50dB
Nominal / max output 300mV / 1.8V
Output impedance 200 ohms, input 62k ohm / 220 pF
1 x PHONO preamp+1x EMI adapter.(you need solder it by yourself.)
3 x 6N2 TUBE
1 x 6Z4 tube
2 x panel
1x transformer(110~120v or 220~240v)
1x power cable
If you need a MC Step-UP transformer. please click follow item:
We also the backup valve kit. if you need get more backup valve kit. you can refer follow item:
Valve tube kit for little bear T10 phono preamp backup 6N2 x 3 and 6z4 x 1
EMI filter for Little bear T10 phono preamp solve back noise problem
we also sale Pro version. if you like, you can refer it. click follow linker:
Little Bear T10 12AX7 Tube valve Phono Turntable RIAA Preamp preamplifier US
GOOD news for some of buyer already bought this preamp before. we sale a case box for this preamp now. if you like it. you can check follow item:
About shipment time:
If you are USA,Australia,Russia,United Kingdom,Italy,DE,FR,Spain buyers,we will ship item to you by USPS express.7-12 business days arrval ,other country buyer.this item will ship to you by register mail,usually 2-4 weeks arrival
Follow pictures just for refer.(by the ways.current the EMI filter do not solder any more ,because we make a connector on the filter adapter. you just wire it like the transformer. then ok), to guide you how to connect cable. and in fact. you need find a place to install it in your preamp. so. you need use a cable to connect the transformer ,EMI filter,and PCB board.then you can put this EMI filter in your preamp. enjoy your good music.
We accept paypal only.