I ordered it in December and planned to build a headphone tube amp with it. I don't have the time now and have to sell.
The output transformers specifications as tested by the owner of Electra-Print Mr. Jack Elliano:
• 10K/32+32 , 10K primary and two 32ohm secondaries
• frequency response better than 30hZ-30kHz -1dB
• 2Watt max power for lower frequency response
• 560pF one winding capacitance
• Gapped for 35mA primary DC current
I did some measurements myself as follows:
• Primary inductance 23H measured with LCR meter B&K 879B. This is only aproximate, correct measurement should be done at DC 35mA.
• Primary DCR 380 ohms
• Each secondary DCR 6 ohms
• tested at nominal conditions and performs as described
• size is about 3"x3.5"x3.75" (LxWxH)
• Can be used in two secondary's configurations 10k/32 with secondary's in parallel and 10k/128 with secondary's in series. However, one can use each configuration's ratio to use different headphones Z corresponding different primary Z at the expense of altering the frequency response
Thank you.
Radu
The output transformers specifications as tested by the owner of Electra-Print Mr. Jack Elliano:
• 10K/32+32 , 10K primary and two 32ohm secondaries
• frequency response better than 30hZ-30kHz -1dB
• 2Watt max power for lower frequency response
• 560pF one winding capacitance
• Gapped for 35mA primary DC current
I did some measurements myself as follows:
• Primary inductance 23H measured with LCR meter B&K 879B. This is only aproximate, correct measurement should be done at DC 35mA.
• Primary DCR 380 ohms
• Each secondary DCR 6 ohms
• tested at nominal conditions and performs as described
• size is about 3"x3.5"x3.75" (LxWxH)
• Can be used in two secondary's configurations 10k/32 with secondary's in parallel and 10k/128 with secondary's in series. However, one can use each configuration's ratio to use different headphones Z corresponding different primary Z at the expense of altering the frequency response
Thank you.
Radu
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