Yeah I’m finding the sameThe Bendix tubes can be kind of hard to find. I've been looking for a Red Bank since before I got the amp.
Latest Thread Images
Featured Sponsor Listings
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an alternative browser.
You should upgrade or use an alternative browser.
Eddie Current Studio 300B... The Thread.
- Thread starter bobmysterious
- Start date
bobmysterious
100+ Head-Fier
- Joined
- Jan 25, 2016
- Posts
- 424
- Likes
- 1,365
It's definitely a drag. They're supposed to sound nice.
Contrails
1000+ Head-Fier
- Joined
- Jan 30, 2013
- Posts
- 1,028
- Likes
- 905
What’s the output impedance of the amp?
And what’s the difference between the Studio and Studio B - if anyone has heard both?
And what’s the difference between the Studio and Studio B - if anyone has heard both?
Brent was out of WE396A as well at the moment but he suggested one better - the avionics grade Tung Sol 2C51 selected for the US Air Force in the 1950s. These are carefully selected for critical aircraft use by the Sperry Gyroscope company.It's definitely a drag. They're supposed to sound nice.
Just got this in the mail. Excited to try it out, will post some impressions in a few days


wasupdog
100+ Head-Fier
Yea, let us know. I'm trying to figure out what differences I hear between the WE396A and Bendix in the meantime. Do you have the regular or MO Elgrogs?
I have other phones I want to give an extended listen but I haven't moved on yet from the Atriums lol.
I have other phones I want to give an extended listen but I haven't moved on yet from the Atriums lol.
bobmysterious
100+ Head-Fier
- Joined
- Jan 25, 2016
- Posts
- 424
- Likes
- 1,365
Awesome pick up! Very interested to hear your thoughts on it.Brent was out of WE396A as well at the moment but he suggested one better - the avionics grade Tung Sol 2C51 selected for the US Air Force in the 1950s. These are carefully selected for critical aircraft use by the Sperry Gyroscope company.
Just got this in the mail. Excited to try it out, will post some impressions in a few days
![]()
KarlStromberg
100+ Head-Fier
- Joined
- Jan 11, 2017
- Posts
- 139
- Likes
- 114
Currently running the Studio B with JJ 300B here and planning to get the Elrog ER300B as I think they could be a step up in resolution and bite. Only thing I am worried about is that I will lose too much of the typical 300B sound, means the soundstage, midrange and warmth. Something which the Mullard GZ34 could maybe compensate. Basically what the WE300B is described to excel at. Latter would be an option as well, but here the roll-off in the treble and bass region is something which makes me think about twice again. Did anyone of you directly compare the Elrogs with the WEs?
bobmysterious
100+ Head-Fier
- Joined
- Jan 25, 2016
- Posts
- 424
- Likes
- 1,365
I've not compared the two, WE and Elrog. I've got a pair of EML Mesh Plates as well, but they aren't really what you're looking for sound-wise. You can't go wrong with the ER tubes though, they sound really good. I'm not gonna get on bended knee about how great they are like many, but I will say that they've made a positive impact on the sound I'm getting out of my rig. Maybe consider the types of material you will be listening to. Different genres may be better represented by one set of tubes or the other. Check out the 300b thread though, there's members with each, some with both.
Last edited:
wasupdog
100+ Head-Fier
I have both and have been swapping between them for the past few days. The funny thing is your answers are already in this thread and the other 300B amp thread. The ER are a step up in resolution and bite and extension at both ends. The WE have a thicker sound. More bass but not as tight. More of the mythical midrange you hear about all the time for 300B tubes but an overall rounder sound at the frequency extremes.
I'm really glad the ER tubes exist. Again like people are saying it's a more modern take on the 300B sound. The only tubes I'm interested in trying at this point are the ER MO. I used to have a ton of 300B tubes but it was a few years ago on a Cayin HA-300B. It's an overall thick sounding amp but most definitely had that big glowing 300B tube sound and way more so than the Studio B imo. I still miss it once in a while but don't prefer to listen to that big glowing sound all the time.
I'm really glad the ER tubes exist. Again like people are saying it's a more modern take on the 300B sound. The only tubes I'm interested in trying at this point are the ER MO. I used to have a ton of 300B tubes but it was a few years ago on a Cayin HA-300B. It's an overall thick sounding amp but most definitely had that big glowing 300B tube sound and way more so than the Studio B imo. I still miss it once in a while but don't prefer to listen to that big glowing sound all the time.
KarlStromberg
100+ Head-Fier
- Joined
- Jan 11, 2017
- Posts
- 139
- Likes
- 114
How do you like that metal base base GZ34 in comparison to the stock one you used before, especially in combination with the ER300B (ordered that too)? Did you check out any other rectifiers before? Trying to find out if I should go for the metal base or fat base one.Just received my Studio B and couldn’t be happier to join the club
I’m running Elrog 300B Mo, JAN 5670 that Craig sent and Mullard GZ34 metal base NOS from 1957. Any suggestions for the input tube rolling? I see a couple of NOS tubes at Brent Jesse’s website so was going to contact him for suggestions. The black square plate RCA seems like a popular choice?
I didn’t try any others but it did make a considerable difference on the stock rectifier that Craig included. From what I’ve heard even the fat base makes quite a difference on the stock rectifier.
If you have the option to go for the metal base, I’d say get that because they last forever and it’s pretty hard to improve on that so you’d be pretty much set on the rectifier.
If you have the option to go for the metal base, I’d say get that because they last forever and it’s pretty hard to improve on that so you’d be pretty much set on the rectifier.
bobmysterious
100+ Head-Fier
- Joined
- Jan 25, 2016
- Posts
- 424
- Likes
- 1,365
I’ve read that the fat base won’t seat all the way due to its width. May need an adapter or something.
KarlStromberg
100+ Head-Fier
- Joined
- Jan 11, 2017
- Posts
- 139
- Likes
- 114
Based on the description I was worried that the metal base could sound too cold or too dynamic, especially in combination with the Elrog 300Bs I ordered (have to wait a few weeks for their delivery). Means as mentioned before I like a detailed, wide and balanced sound signature (maybe with a little emphasis on the bass region), but I also like the warmth of the 300B tubes. I read in two comments that people described the fat base as more musical than the metal based in that regard. Therefore I was asking.
Btw...with the Sovtek there is still some space left, not sure that would be enough for the fat base. I was talking to Craig and he mentioned that earlier Studio B models had larger holes for the rectifier.
Btw...with the Sovtek there is still some space left, not sure that would be enough for the fat base. I was talking to Craig and he mentioned that earlier Studio B models had larger holes for the rectifier.

Hello. Didn’t know this thread existed until today but glad to find some other Studio B owners.
bobmysterious
100+ Head-Fier
- Joined
- Jan 25, 2016
- Posts
- 424
- Likes
- 1,365
There's a handful of us floating around here. 

Users who are viewing this thread
Total: 1 (members: 0, guests: 1)