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What SE to build

opa1 said:
You might check these out. OT10SE-VC87 Single Ended Output Transformer 12VA 5K,7Kohm:4/8/16 60mA | eBay
Tested: 5K Tape Machine OTs Tested | Page 2 | HiFi Haven
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I've corresponded with Matt (@musicalpowersupplies), nice guy. Those listed on eBay are mostly for guitar use. If it is for HiFi use, HF will be in the part number. Email him for custom HiFi OPT's. He'll be glad to do them. He wound me some 5k 50mA OPT's for a 6Y6 "flea amp" amp I have yet to make, but I connected them to my 2A3 amp for testing and they sounded great. Frequency response and distortion looked good too.

His prices are very reasonable and if he is not too busy, he can make a custom set in about 10 days or so. Musical Power Supplies_5k_50mA_SE OPT.jpg
 
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THD+N said:
I've corresponded with Matt (@musicalpowersupplies), nice guy. Those listed on eBay are mostly for guitar use. If it is for HiFi use, HF will be in the part number. Email him for custom HiFi OPT's. Hell be glad to do them. He wound me some 5k 50mA OPT's for a 6Y6 "flea amp" amp I have yet to make, but I connected them to my 2A3 amp for testing and they sounded great. Frequency response and distortion looked good too.

His prices are very reasonable and if he is not too busy, he can make a custom set in about 10 days or so. View attachment 2744572
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Found the link:
Musical Power Supplies, Inc. - Products
You're correct. The tested OPTs are:
OT10SE-HF-5K-SPEC:
21H primary L at 0mA
160 Ohms DCR
THD at 2W/1kHz 2.5%
Power at 35Hz 10% THD - 1.92W

OT10SE-HF-5K:
20H primary L at 0mA
160 Ohms DCR
THD at 2W/1kHz 1.53%
Power at 35Hz 10% THD - 1.65W
 
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