about Digital Phono Preamp (RIAA Mode)...ADI-2/4 Pro SE ...RME

 

https://www.google.com/search?sca_esv=9b49c139cd80d27d&sxsrf=ANbL-n4W_y9tX1z4UVb7x-NeoHy54BlIJw:1774916147302&udm=7&fbs=ADc_l-Z6XGGbkKmpylZqg2J7ZOuVW-X8roCBa3fqVtqUv4pM3H0vUZNdvHPl3VZzlRZi-BpWF3FTxjfIcPVnHVqdyYSGoe7DBODyvdi01sToYHp-XCAWyiJkQt7Ohx91aOTXEh0at0TuWo-XdVTgWbELStspOCTXF5ZpF4jtV8eMV4hZ66pKgGOQvews4zcCyFz1c_r4PNAz&q=RME+ADI+Pro+SE+2/4&sa=X&ved=2ahUKEwig99zz7ciTAxVxavUHHSi6M70QtKgLegQIFhAB#fpstate=ive&vld=cid:e12bf884,vid:BEpRZcDsLuI,st:0

function block

sim. input waveform by diff. imp.

input imp. select by front menu

normal mm cartridge gain x100 times

gain also select by front menu

rare panel

the block of gain table

magric... the groove noise cancel feature

could re-view vinyl waveform and tunning DAC gain
very friendly because the sound no black box

analog phono preamp (w 1st-2nd RIAA) diy struggle record
w mc/mm input ...fix gain in high imp.
w 1st-2nd RIAA profile option for diff. vinyl RIAA profile
output transformer with attenuator
groove noise cancel feature ...under estimate

Cyclotron Amplifier ...placement push-6JM6/pull-6JM6 high voltage rectifier location~4

 

push pull nets review

clarify for cathode output

audiophile

mono mono SE Tube amplifier 6DJ8/6JM6～3 6DJ8 replace by 6c45pi

 

https://kao211.blogspot.com/2021/02/mono-mono-se-tube-amplifier-6dj86jm62.html

w 6DJ8/6JM6 vs 6C45pi/6JM6
drive 3 ways horn speaker
decide 6c45pi drive 6jm6 is better

3 ways speaker ~modify X'over of mid-tweeter circuit

https://kao211.blogspot.com/2017/05/3-ways-speaker.html

test 3 ways horn speaker
by DAC (w RIAA profile)

take off attenuator
for more crystal sound

Cyclotron Amplifier ...placement push-6JM6/pull-6JM6 high voltage rectifier location~3

 

Pleasure to see ...the recoed of Made by Man The Jukebox Restorer

 

https://www.youtube.com/watch?v=Tm6nIe9N1_U

my record

the first running record ...playback speed need fix

my record

                

my record tube amp.

my record

my record

my record

my record

my record ~Lyric cover take off

fix light

my record~transform to Conti. platform

my record

magazine roller & turntable fix ...the first running record

my record

Cyclotron Amplifier ...modify to 6JM6 Cathode output typology~2

 

before

20251013 record

take high voltage Cap.

-63V F-Self-biased source of negative voltage 

                

ref. circuit