Dark Voice 339 - Page 7

Actually, 6AS7 have two triodes inside. Since DV339 have 2 x 6AS7 tubes then the amp could be created as push-pull... IF they want... (size permit, plenty of space...)...

But, Lafigaro (or Darkvoice) decide to use the two triodes in parallel in SE configuration. An amp topology is designer prerogative, right?

Ah, I see, just that I never see this implementation on any amp before, there must be a reason for it, not enough current maybe?

current boosting could be one of the reason... I saw some amp (like Woo) use only 1 x 6AS7 for both L & R channels..

the other possible reasons are to lower output impedance and to lower operating (voltage)

Redbull, I saw that you have Leben 3000 and DV337 THA in your headamp inventory... Leben use EL84 as power tube and 337 use 6AS7 as power tube... what is your opinion no both?

Mmmh ... can anybody help me?

I'm not sure if i should choose the 339 over the Ld MK VI.

What differ in sound can I expect? (HD650 / Beyer 880)

Greets

Airwin

Quote:

Originally Posted by dw1narso 

Redbull, I saw that you have Leben 3000 and DV337 THA in your headamp inventory... Leben use EL84 as power tube and 337 use 6AS7 as power tube... what is your opinion no both?

Leben uses 2x EL84 for each channel, push-pull, with feedback and output transformer.

THA337 using single 6AS7 dual triode on each channel, I guess no feedback (never read info on this), and OTL.

Sound impression on Leben in comparison to DV337,

- Leben is more 'clean' sounding, instrument separation is better, maybe due to its feedback system? 337 is more 'round', lush and 'romantic' in comparison, breath can be heard more on Leben.

- Leben FAST! and very dynamic, bass quantity is slightly less, but very impactful, hard hitting and very detailed, maybe due to its push-pull system and a lot of POWER? DV bass sound a little 'loose' in comparison, not that DV bass is bad, it is actually a LOT better than GS Solo SRG I used to have.

- Leben treble is very very clean and extended, maybe due to the nature of Pentode's vs Triode, makes DV sound a little less refined on top and a little roll off, but still VERY good.

- Leben timbre is very good, realistic and 3 dimensional, I don't know what causes this, maybe due to its design itself and PLENTY of power (2 power Pentode for 1 channel?), superior control to the headphone driver.  It's much easier to identify what is the material making that sound, is it wood, metal, woodwind, string, without having to think hard, it's so obvious.

- Leben soundstage is slightly narrower than DV.

Despite my comment above, I LOVE both, yes they sounded different, but there's something in DV that I can't miss.

My friend is in the process of building Crack, it will be interesting to compare the sound to DV, considering Crack is using one dual triode for 2 channel and use triode as the driver tube, DV is using Pentode as driver tube.

That's all I can capture the differences of both.

I redesigned the new machine 339 in order to further improve 337.
The output capacitance of 337 series machines is only 50μF but 339 is 130μF, so 339 have more strength in the bass, the structure of 339 is more reasonable,the pipe is on the front,far from the the transformer  avoiding the interference, especially in low impedance,the headphones can be very clear, 337 has mild hum when it running low impedance headphones.
339 has great improve in using device, tube. RCA socket.and Headphone socket by cmc both make reliability more better.
 

Hmm, it happen that I don't hear hum with my Grado SR-60 with DV337, maybe I'm just lucky.

How is the 339 compared to the 332s? esp. for driving HD650(300 ohm) and k701(62 ohm), wich im planning to buy next year.

RedBull, very well said!

Quote:

Originally Posted by Airwin 

Mmmh ... can anybody help me?

 

I'm not sure if i should choose the 339 over the Ld MK VI.

 

What differ in sound can I expect? (HD650 / Beyer 880)

 

Greets

 

Airwin

 

Airwin is your source and headphone balanced?
 

Write more about  the comparison of DV337 and Lafigaro, please. I want to purchase one of them.

lafigaro 339 of course, thanks

I feel that, if the price is close, I will buy a 399, not a 337 because 339 is a product to which the designer made sincere efforts to improve.  
 

Quote:

Originally Posted by robeeert1 

lafigaro 339 of course, thanks

Quote:

Originally Posted by Audiogalore 

 

Airwin is your source and headphone balanced?
 

I have balanced preamps, yes.