[shepperd]

I have a question; on several occasions I have had tubes light up normally but no sound. They have low hours and came in their original boxes with the codes corresponding. One set were teslas, another Voshkod which are supposedly indestructable. I cannot for the life of me understand this. I know they are compatable because they worked for a long time with no problem. Any thoughts?

 

[Johnybuchar]

Oogh nice tubeamp. Do you use it as standard amplifier too? I have headamp LittleDot3 and integrated tubeamp Yaqin MC100B + AurumCantus V3M and I am still surprised their listening, great products from China!

BTW my tube collection will be appended by Siemens or Telefunken .

 

[gibosi]

I have a question; on several occasions I have had tubes light up normally but no sound. They have low hours and came in their original boxes with the codes corresponding. One set were teslas, another Voshkod which are supposedly indestructable. I cannot for the life of me understand this. I know they are compatable because they worked for a long time with no problem. Any thoughts?

Just guessing, perhaps it is a pin/socket problem. While the heater connection is good, evidenced by the fact that they light up, if the cathode or grid or plate pins are not making a good connection in the socket, there would be no sound.

I suggest you aggressively clean the pins. Many here scrape the pins with the dull edge of an x-acto blade.

 

[Tony51]

Oogh nice tubeamp. Do you use it as standard amplifier too? I have headamp LittleDot3 and integrated tubeamp Yaqin MC100B + AurumCantus V3M and I am still surprised their listening, great products from China!

BTW my tube collection will be appended by Siemens or Telefunken .

I only use it as a headphone amp but I did connected to my SVS Ultra Towers and at 12watts per channel into 8 Ohms and it pushed them well. Not better then a solid state but very good considering my towers have 88 db and the Audioromy asks for 90db if my memory serves me well.
Telefunken is in my bucket list I hear nothing but praise.
Which Siemens are you using? The blue glass?

 

[Johnybuchar]

I am generally looking for products of Siemens/Telefunken, i am reading and collecting information because I do not have opportunity to listen them. About listening via speakers, Yaqin is beast , no problem with Quadral Amun mk4 - 3way, sensitivity 84dB!

 

[Tony51]

What's the model of your yaqin?

 

[Johnybuchar]

Yaqin MC100B, I know low-cost but superb sound. Great to switch triode vs pentode according to mood and taste . Outcome depends on tube rolling, do not hesitate to spend sum approaching value of the amplifier bacause of fully tube amplifier is "live instrument". I cannot imagine a listening without tubes!

 

[Tony51]

What is the difference between pentiode and tridiode?
I'm running Tung-Sol 6v6GT Russian made
2 Gold Lion gold pin 6n1(6922)russ Rus made
1 6n3(5670/396a) Western Electric

 

[TrollDragon]

I am running the WE 396a(5670) on my Audioromy 6v6 amplifier. But I know that WE 5654 makes them because I just bought a set for the Little Dot mk2 which I am burning them in as we speak. Not listened to sound yet on my LD but my W.E 5670 are sounding pretty great on my Audioromy amp.

Nice, I have a pair of JAN GE 5670s in my Quinpu A3, good tube.

 

[Tony51]

Nice, I have a pair of JAN GE 5670s in my Quinpu A3, good tube.

The Jan GE 5670 is darn good too. Mine has triple mica, I also have the jan5670w.

 

[shepperd]

Just guessing, perhaps it is a pin/socket problem. While the heater connection is good, evidenced by the fact that they light up, if the cathode or grid or plate pins are not making a good connection in the socket, there would be no sound.

I suggest you aggressively clean the pins. Many here scrape the pins with the dull edge of an x-acto blade.

 

[shepperd]

The pins looked squeeky clean but I used some Craig's conditioner and cleaner on them anyway and the tubes work again. Pretty strange behavior but tubes are strange little beasts.

 

[Anomalia]

What tubes would be best option when using hifiman 400i (35 ohms) with LD 3? Now using standard power tubes with mullard cv4010 and sounding great.
6N6P-IR + 6HM5?
6SN7 not compatible with low impedance? Or should I try, 400i are quite easy to drive.

 

[Ad720]

Hi all, I just received a second hand Little Dot MKii and the previous owner included a few different tubes. I had already ordered a set of Voshod 6ZH1P-EV preamp tubes.

In the meantime time, I spent some time listening with the tubes furnished by the seller which include GE Jan 5654w preamp tubes and 6h6n power amp tubes of unknown manufacturer.

My impression was very good but I felt that the bass was a little boomy and uncontrolled.

Should I expect my incoming preamp tubes upgrade to help with that or should I be looking to upgrade these power tubes as well?

 

[TrollDragon]

What tubes would be best option when using hifiman 400i (35 ohms) with LD 3? Now using standard power tubes with mullard cv4010 and sounding great.
6N6P-IR + 6HM5?
6SN7 not compatible with low impedance? Or should I try, 400i are quite easy to drive.

OTL amps like the LDMK2/3/4 are not really designed to work well with low Z headphones, there is a bass roll off because of the low resistance.

Hybrid amps like the LD I+ are better suited for low Z.