[FullRangeMan]

Old Luxman MQ3600

Some old Luxman used Sansui transformers, which staff now are Hashimoto engineers.

[displayname]

[Jon L]

0310202150 by drjlo2, on Flickr

[meby]

[plasmapan]

For some reason the pictures upside down
1)4th version
2) 1st version
3)2nd version
4)5th version
First version sound.. fantastic mid,the best I had ever heard,seductive,neutral ,tonal balance is on the warm side,smooth and relax with enough transparent when listen to single instrument without boring,if you mainly listen to vocals,nothing can beat it.
Second version... this one sounds more open and tight,good attack and more transparent,mid is clean and should suit more different system.
Forth version.. this one sounds brighter and the mid is leaner,beautiful high with tight bass,not as musical as its older brothers.
Fifth version... this one sounds not that good,the mid is cloudy and the high is hash ,bass not solid.
I did compare these 4 version few years ago and this second tested remind me that I'm right as the Mullard F31 is still the best sounding GZ34 money can buy,if someone can send us some review of the Third version will be appreciate.

Thank you very much for this review of the GZ34's Adrianc!

Just a question : how to consider an "RS1 54L"? Is it comparable to the "First version"?

Here some pictures of the RS1 54L :











Thank you in advance for your help!

Gianluca

[Unison845]

808 SE tube amp.

[FullRangeMan]

Wow, do you could tell us about the 808 sound quality?

[Unison845]

The 808 in this amp run in Class A2 with little feedback and put out 10W. It sounded quite good , it does not have the punch and big sound of 845/GM70... but overall quite nice with my open baffle Supravox.

[abd1]

Line Magnetic LM-508. Like Ali said, "float like a butterfly; sting like a bee."

[Unison845]

A variety of experimental tubes for audio amplifier.

[knotscott]

Twin Dynaco/VTA ST-70s bi-amped, triode mode:



Lazarus Cascade Basic tube preamplifier:

[Freo-1]

Lately, been listening to a tube setup as a change of pace, and enjoying it immensely.  Tubes can sound wonderful with Jazz/Standards, and older recorded music in general.


The preamp is a Thomas Mayer 6AH4 clone, which is one of the best sounding tube preamps I've ever heard.  It's VERY quiet, especially for a tube setup.


 


for tubes.


The power amps are a pair of 1625 monoblocks.  The 1625 is a 12V version of the 807 (the tube that won WW2!)  The driver/phase splitter tubes are 6BL7, a TV tube that works quite well for audio.


 


 


 
 
These output 110 to 120 watts of power.  I have over 100 NOS spares of 1625, most of them from the 40's (MIL-SPEC) from Hytron, RCA, and Sylvania. 
 

[Kray]

Been on a single ended kick lately. Here’s one...

My Oliver Sayes 45 Yamamoto clone with Birdseye maple plinth.
Love the blue globe Arcturus 80 rectifier.



Here’s a video of it in action
https://youtu.be/B9tGUV7im28

[Kray]

Lately, been listening to a tube setup as a change of pace, and enjoying it immensely.  Tubes can sound wonderful with Jazz/Standards, and older recorded music in general.


The preamp is a Thomas Mayer 6AH4 clone, which is one of the best sounding tube preamps I've ever heard.  It's VERY quiet, especially for a tube setup.

I'm working with Oliver Sayes to build me a 6AH4 preamp to match my 45.

[dB Cooper]

Well, it IS a tube, just probably not an audio tube... RF transmitter tube of some kind?
 

[Kray]

My latest favorite tube amp.. 307a with C3M driver and 5AR4 rectifier. Also 0D3 screens

[Early B.]

The Ultimate 300B amplifier from Radu Tarta with a separate, 55 lb. power supply:

[Woodsage]

[SET Man]

Well, it IS a tube, just probably not an audio tube... RF transmitter tube of some kind?
 

Hey!
   
    Man! That's a big tube, that lovely lady needs two hands to hold it! Mine is not that big... the biggest tube I have are 845 tubes