[MIKELAP]

 

Did you find the source of the hum just curious i like this amp its very nice  

 

[Xenophon]

  I am looking at the 339 very nice looking amp i see very popular with Senns HD650 and HE 500 HP but what is the consensus regarding the Senns HD800 i saw a couple negative comments are they recommended with this amp was reading that this amp is very neutral and SS like .i use my Senns with a WA2 and a Burson Conductor i also have a pair Denon's d-5000 anybody ever gave a listen with these HP. Appreciate your comments .

337 is neutral sounding -for a tube amp-, the 339 has a noticeably warmer voice.  Question of preference, I like the 337's voicing more.  The tubes you use also have an influence of course but imo not as much as the topology and operating point set by the designer.  Personally I like my HD-800 on the 337 and nobody will run away screaming while listening to them but it's true that the HD-800 do better on my SS gear.  Just an opinion of course.
 
I like the DV/ La Figaro amps very much but they should do something about the different versions and make them more distinctive.  A good company producing a good product but their marketing to non-Chinese language markets could use a refresher.

 

[hifimanrookie]

I'm the guy running a pair of 6528 (heater current of 5 A), see pic below.  Posted about it in the 6AS7 tube rollers thread.  But as was said:  I own a modded 337, not a stock 339.  Works fine with me and there are other guys in that thread who also did this but it's very much not recommended and if you do it and it breaks things or sets your house on fire...don't call me.

Am glad to see my ex-baby (aka the dark one) still gets the attention/ affection it deserves from u my friend....but damn..those tubes are huge.. Whats next? nuclear reactors on ur 337 to make it sound even more powerful? It would probably work too, as that particular amp is modded to endure almost anything

 

[Xenophon]

Am glad to see my ex-baby (aka the dark one) still gets the attention/ affection it deserves from u my friend....but damn..those tubes are huge.. Whats next? nuclear reactors on ur 337 to make it sound even more powerful? It would probably work too, as that particular amp is modded to endure almost anything

 
Next would be an 833 tube-based amp, will require some remodelling as it's happy running on a B+ of 1500-2000 V, outputs >200W (and heats up your house and quadruples your fire policy premium in one fell swoop).
 
Just joking,  I know a guy (electrical engineer) in Belgium who built one using these but I'm not comfortable sitting next to that thing, the plates glow a dull red (no hotspots though) and the voltages involved make it a specialist (and prohibitively expensive with all custom or wildly atypical components)  enterprise.
 
The 337 is still seeing regular service, I'm building another tube amp now and it works nicely but I still have to settle on a nice enclosure.

 

[hifimanrookie]

Hello all and thank you for providing great information in this thread. Has been very helpful.

I just purchased La Figaro 339 from another Head-Fi'er and indeed, it is a great amplifier for HD 650 and HE-500, many others too I am sure.

Tubes in use at the moment are RCA 6AS7G and Mullard EF80, which I found to be quite warm sounding, with good mid-range and body, yet accurate. Suitable for my ears.

These Mullards are NOS, but they keep making some noises if idle when I am using HD 650. With HE-500 cannot hear anything. I first thought these tubes created distortion, but they seem to fine. I wonder if "first time use" for tubes can create anomalities more easily.
Telefunken EF800 were silent but had been used for some time before I got the amp.

La Figaro's power distribution seems to be very sturdy and well made. Has anyone tried upgraded power cables with this amp? I have one PS audio AC-5 and I could get another.

In some equipment by my experience the upgraded power cable can bring great benefits if the power supply isnt such top notch.

i had a modded 337(the one xenoflex has now) and two things became appearant to me after i tried it:
1. Upgradin powercords: the 337 is sensitive to the powercords used..so i upgraded both of them.
2. Directly connect powercords into the wallsocket..no filters etc. It sounds best that way..

Ofcourse it was in my situation..a flat built in 1964, 4th floor in amsterdam..220-230v. Perhaps in other areas its different.


Ps..i have the two upgraded powercables on sale now..matched pair...with very expensive very heavy euro shuko connectors.were custombuilt for my 337.
If ur interested..pm me

 

[MJS242]

For those that wanted an EF86 adapter, it looks like you can buy it directly from their website now:
 
http://www.yuking09.com/product/6j4p-to-ef86-adapter/

 

[White Lotus]

  For those that wanted an EF86 adapter, it looks like you can buy it directly from their website now:
 
http://www.yuking09.com/product/6j4p-to-ef86-adapter/

 
THANK YOU.
 
 
This is great news. 

 

[xmdkq]

To the user's machine 

 


 

 

 

[xmdkq]

After the test completed the photos 

 

[Ultrainferno]

Very nice!

 

[hybridamp]

Holy post count!  I've tried to read back through the thread's 160+ pages, but I'm going to be a complete turd and ask...  So what is everyone recommending for HD-650's in regards to input tubes?
 
My favorites on my La Figaro 332 Classic were Voshkod 6ZH1P-EV, but I am now upgrading to a 339.
 
My preference in tubes generally leans toward cavernous bass extension with a lot of output, solid mid-range, and sparkly high range with minimal roll-off (most would probably call this preference "bright", while I blame it on my preference towards metal tweeters, titanium drivers/horns in loudspeakers).

 

[hifimanrookie]

Holy post count!  I've tried to read back through the thread's 160+ pages, but I'm going to be a complete turd and ask...  So what is everyone recommending for HD-650's in regards to input tubes?

My favorites on my La Figaro 332 Classic were Voshkod 6ZH1P-EV, but I am now upgrading to a 339.

My preference in tubes generally leans toward cavernous bass extension with a lot of output, solid mid-range, and sparkly high range with minimal roll-off (most would probably call this preference "bright", while I blame it on my preference towards metal tweeters, titanium drivers/horns in loudspeakers).

For the 339 u could try the following:
Driver tubes: rca red hot 5693 or tung sol sj7gt meshplates
Powertubes: tung sol 5998.

 

[hybridamp]

 

 

For the 339 u could try the following:
Driver tubes: rca red hot 5693 or tung sol sj7gt meshplates
Powertubes: tung sol 5998.

 
That's the second time someone has recommended the 6SJ7GT with Mesh Plates so I will have to give them a try. 
 
Is there a common source you guys buy those from?

 

[Xenophon]

We had a limited group purchase a while back, coordinated by one of the European members.  Else it's a question of looking around on the web, eBay (caveat emptor) etc.  They're not that hard to find.  And obviously we're all competing for the best tubes too  Although I'm done for the time being, I enjoy listening to tubes but just built a couple of tube amps and am now focussing on DIY SS amp builds for the coming year.
 
The TS 6SJ7GT are nice, no doubt.  So are the 5693, a bit less detailed though.  For the power tubes my favourites are the TS 5998, 7236 and some of the graphite plate 6080.  But for major signature changes I think it's better to start where the impact is largest, your headphones.  All a matter of taste and -putting on my asbestos suit here- I really doubt if many people could readily discern let along identify say, various flavours of 6080 for instance.

 

[Ultrainferno]

For the 339 u could try the following:
Driver tubes: rca red hot 5693 or tung sol sj7gt meshplates
Powertubes: tung sol 5998.

 
I disagree. For HD650 you do not need the 5998 power tubes at all and you're better off with some cheap RCA or Chatham 6AS7G. 5998 and HD650 don't work together, it's like a ferrari engine in a cruiser car.
For input ou could try the 6SJ7GT Mesh with those 6AS7G, another great combo is the EF80 from mullard. The 5693 is only recommended for Orthodynamics, in other combinations this tube isn't the best of matches. (but for orthos, the 5998 & 5693 combo is nice even if I prefer my HE500 on the 6AS7G)
 
Best power tubes I have are the bendix graphite plate, but these are getting expensive.
 

  We had a limited group purchase a while back, coordinated by one of the European members.  Else it's a question of looking around on the web, eBay (caveat emptor) etc.  They're not that hard to find.  And obviously we're all competing for the best tubes too  Although I'm done for the time being, I enjoy listening to tubes but just built a couple of tube amps and am now focussing on DIY SS amp builds for the coming year.
 
The TS 6SJ7GT are nice, no doubt.  So are the 5693, a bit less detailed though.  For the power tubes my favourites are the TS 5998, 7236 and some of the graphite plate 6080.  But for major signature changes I think it's better to start where the impact is largest, your headphones.  All a matter of taste and -putting on my asbestos suit here- I really doubt if many people could readily discern let along identify say, various flavours of 6080 for instance.

 
That was me who did the Group sale for the mesh plates. If there's enough demand I will do a new sale.

 

 
 
I believe there is a pair for sale on the FS boards.
I have a bunch of 7236 here but haven't felt the need to try them yet. Will be hard to beat the 6080 Graphites.