Up for sale is the superb MHDT Havana DAC. This DAC is well reviewed online and competes with DACs costing much more. This DAC will come with the stock Jan 5670 tube and na MHDT high grade USB cable ($50 value).
I also have the extremely rare and superlative NOS tube Bendix 6385 (2 pair), which takes the SQ of this DAC to its highest level. One is used and the and the other new. I also have the next in line, behind the Bendix, Western Electric 396A NOS tube up for sale.
Send me a private message for prices on the upgraded tubes.