sandyk Posted June 26, 2020 Share Posted June 26, 2020 1 hour ago, One and a half said: Looked up the tube spec for the 12AU7 and note the B+ max voltage was 250V. With the devices having a 12V DC input, there are three methods to achieve a higher voltage. ifi uses an DC DC switcher. Can use the diode cap triangle method Vibrator. Interesting concept which these pres use... Another way of doing it.. https://diyaudioprojects.com/Tubes/12AX7_Preamp/ How a Digital Audio file sounds, or a Digital Video file looks, is governed to a large extent by the Power Supply area. All that Identical Checksums gives is the possibility of REGENERATING the file to close to that of the original file. PROFILE UPDATED 13-11-2020 Link to comment
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