Description: Here's an empty moving coil phono step up transformer box for use with your Harman Kardon XT-2 or XT-3 input transformers. This box will also work with RCA MI-12399 or Bogen T-155. This box has a gain switch on each channel, allowing you to use the transformer's full primary coil, or the center tap to double the ratio and voltage gain. There's also a ground switch that allows a few different options for grounding the aluminum case. You can use "L" to ground the box to the left RCA audio shield, but keep the two audio shields separate from each other, or you can use "L+R" which connects the box to both shields and thus also joins the shields together. You can also put it in a center position which doesn't join the box to either audio shield. This position allows you to keep the audio and chassis grounds separate, as they come out of most turntables, all the way up to the preamp. Because in the center position the chassis isn't grounded to either RCA cable, you do need to run a separate ground from the SUT to your preamp ground screw in this position. Whichever position you put the switch in, you should normally be able to attach your TT's tonearm ground wire to either the SUT ground screw, or the preamp screw, whichever you prefer. In general you don't really have to worry too much about what the ground switch is doing, just hook up the SUT however is convenient and then put the switch in whichever position gives you the lowest hum. This box is priced a little higher than the other empty transformers boxes I sell because of the difficulty and expense of finding good quality 9 pin sockets. For a long time now I've only used NOS sockets, and when I happen to have them I'll continue to do so, but as of now I'm down to a very small supply of good used ones. I don't know if I'll be able to continue selling these 9 pin bases for too much longer! Used sockets are carefully cleaned and tensioned if need be before hookup, and the box is tested and guaranteed to work provided your transformers also work. Please let me know if you have any questions. Thanks!
Price: 159 USD
Location: Salt Lake City, Utah
End Time: 2024-08-18T14:12:39.000Z
Shipping Cost: N/A USD
Product Images
Item Specifics
Restocking Fee: No
Return shipping will be paid by: Buyer
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Country//Region of Manufacture: United States
Country/Region of Manufacture: United States
