PL504 SE First Run Testing Ua=54V 95mA Anodecurrent. Powersupply +/-27V

(2:48)

PL504 SE Ua=50V Ia=83mA TESTING Part I.

(3:23)

PL504 SE Ua=50V Ia=83mA TESTING Part II.

(1:33)

PL504 Stereo SE Audiofil Amplifier Testing

(3:34)

PL504 Stereo SE Audiofil Amplifier Testing

(5:55)

PL504 SE Stereo Beta test Doom music

(1:)

PL504 SE Amplifier testing (1X8W from 115V DC PSU)

(3:34)

PL504 Parallel SE Short Testing on ORION HS 501

(1:)

TUBE AMPLIFIER TEST PL504 Class A

(59)

EAG AE 785/A 40W Tube Amplifier testing after rebild PL504 PP (Power TEST)

(47)

PL504 @ 50Vcc - Stereo tube amplifier

(1:21)

22W Tube Amp using 2×PL504 and 6AM6S

(30)

12AT7​ \u0026​ PL504​ SE

(4:34)

PL500 PL504 SE Tube amplifier Beta TEST 60V DC Voltage 2W Output power

(1:59)

Greek Sound Amplifier PL-504 X 2, STEREO

(22)

PL504 Class A low power tube amplifier + 2 x BC 548 transistor preamplifier

(1:37)

PL504 @ 50Vcc

(43)

EAG AE 785/A 40W Tube Amplifier testing after rebild PL504 PP

(5:33)

4X PL500 PL504 Tube PP Amplifier With Bluetooth Final TEST

(15:51)