AudioNervosa

Systemic Development => Amplification and Preamplification => Topic started by: rollo on May 10, 2020, 11:28:13 AM

Title: 300B Mono blocks
Post by: rollo on May 10, 2020, 11:28:13 AM
  Other than Border Patrol and Audio Note any suggestions for Rethm Saadhana speakers at 100db ?



charles
Title: Re: 300B Mono blocks
Post by: Emil on May 10, 2020, 12:02:37 PM
Aric Audio

External power supply. Made in USA


http://aricaudio.com/products.php?product=S300BSET

oops. not monoblocks
Title: Re: 300B Mono blocks
Post by: Emil on May 10, 2020, 12:14:19 PM
and another...

http://www.coincidentspeaker.com/mpsip_amps-amps.html

Joe aka jbtrio has a pair

Title: Re: 300B Mono blocks
Post by: rollo on May 10, 2020, 12:38:29 PM
and another...

http://www.coincidentspeaker.com/mpsip_amps-amps.html

Joe aka jbtrio has a pair

   Heard them at Joes. Sounded VG with His Horning speakers.

charles
Title: Re: 300B Mono blocks
Post by: rollo on May 10, 2020, 12:42:13 PM
  The Aric looks very interesting thanks. Considering Border Patrol, Audio Note and Coincident so far.




charles
Title: Re: 300B Mono blocks
Post by: rollo on June 08, 2020, 08:17:50 AM
  Still looking.

charles
Title: Re: 300B Mono blocks
Post by: Nick B on June 29, 2020, 10:10:47 AM

https://www.audiomirror.com/product-page/45w-mono-blocks-set-class-a
Title: Re: 300B Mono blocks
Post by: Nick B on June 29, 2020, 12:19:39 PM
thanks, not sure why my link wasn't working; i edited it, and now it works...

doug s.

https://www.audiomirror.com/product-page/45w-mono-blocks-set-class-a

Beautiful amps...and his dac has a good reputation
Title: Re: 300B Mono blocks
Post by: rollo on June 29, 2020, 01:10:36 PM
  I was using the Lamm ML-2 however sold. Audio Mirror makes a good amp. All I need is 1.5W to drive the 102db Rethms. Was using Amps I sell. I do not sell a 45,300b, etc Amp. Was thinking Shindo, Audio Note, Airtight, etc.

charles
Title: Re: 300B Mono blocks
Post by: Jack on June 29, 2020, 04:52:44 PM
Charles

Take a look at the amps from Triode Lab and their sister company, Finale Audio built just across the border in Toronto.  This pair is $5500 CAD so about $4300 US.

http://www.finaleaudio.com/f-300b-mono-blocks
Title: Re: 300B Mono blocks
Post by: rollo on June 30, 2020, 12:18:16 PM
  Thanks Jack.

charles
Title: Re: 300B Mono blocks
Post by: Response Audio on July 03, 2020, 07:22:49 AM
Hey Charles. Sorry if I missed it but are you looking for a product to carry or just something to be best able to showcase the speakers.
I would look into 2A3 or 45 power. When I had the Usher D2 speakers (98dB with TAD horn), anything from 1.5 warts provided a great presentation. I loved the 45 amps I had with them.
Title: Re: 300B Mono blocks
Post by: rollo on July 03, 2020, 07:49:07 AM
  Personal use.  Thanks.

charles
Title: Re: 300B Mono blocks
Post by: rollo on July 03, 2020, 07:49:56 AM
Hey Charles. Sorry if I missed it but are you looking for a product to carry or just something to be best able to showcase the speakers.
I would look into 2A3 or 45 power. When I had the Usher D2 speakers (98dB with TAD horn), anything from 1.5 warts provided a great presentation. I loved the 45 amps I had with them.


  Which one ?

charles
Title: Re: 300B Mono blocks
Post by: Response Audio on July 03, 2020, 08:04:57 AM
Hi Charles, while it's no longer available, it was the Welborne Labs 45 mono blocs.  If your only looming for something for personal use, maybe have someone custom build the perfect amp for your needs and preferences.
Title: Re: 300B Mono blocks
Post by: rodge827 on July 15, 2020, 06:41:56 PM
Radu Tarta at Simple Pleasures will custom build any amp you want. Would love to own his turbo 45 based on the 45b tube from EML.  He’s a great guy and has done some work for me on my preamp.

https://simplepleasuretubeamps.wordpress.com/
Title: Re: 300B Mono blocks
Post by: Nick B on July 15, 2020, 10:29:59 PM
Hi rodge827,
Welcome to the forum!
Nick
Title: Re: 300B Mono blocks
Post by: Nick B on July 25, 2020, 07:27:29 PM
this looks like it might be another contender:
https://www.usaudiomart.com/details/649638432-yamamoto-soundcraft-a-010-western-electric-vt-52/ (https://www.usaudiomart.com/details/649638432-yamamoto-soundcraft-a-010-western-electric-vt-52/)

review:
https://6moons.com/audioreviews/yamamoto11/1.html (https://6moons.com/audioreviews/yamamoto11/1.html)

eye candy:
(https://i.ebayimg.com/images/g/ljgAAMXQySpRIcPp/s-l300.jpg)

doug s.

I’ve always wanted to listen to one of these in my system. But sadly, I can’t ever recall having had a speaker efficient enough to be driven by something like a Yamamoto.
Title: Re: 300B Mono blocks
Post by: rollo on July 26, 2020, 12:09:04 PM
  Thanks Guys. Lots to choose from. Leaning towards a 300B or 45. Tektron has cauht my attention. Roger and Doug really appreciate your suggestions.


charles
Title: Re: 300B Mono blocks
Post by: steve on August 03, 2020, 03:15:59 PM
  Other than Border Patrol and Audio Note any suggestions for Rethm Saadhana speakers at 100db ?

charles

Charles, have you considered Pro Musica's 3rd generation upgrade to the Stereo ST-70? After you audition
one of those amps, you won't want a dht amplifier, and I have audition both 2nd, 3rd generation
and dht amps for some 20 years. Pro Musica blows them away in every catagory including "in touch with the music". Dan has both 2nd and 3rd generation amplifier with his LS3/5As, Harbeths etc and virtually nothing touches them.

Just something to check out, if you can find one, if you get a chance.

steve
Title: Re: 300B Mono blocks
Post by: Nick B on August 03, 2020, 08:52:00 PM
  Other than Border Patrol and Audio Note any suggestions for Rethm Saadhana speakers at 100db ?

charles

Charles, have you considered Pro Musica's 3rd generation upgrade to the Stereo ST-70? After you audition
one of those amps, you won't want a dht amplifier, and I have audition both 2nd, 3rd generation
and dht amps for some 20 years. Pro Musica blows them away in every catagory including "in touch with the music". Dan has both 2nd and 3rd generation amplifier with his LS3/5As, Harbeths etc and virtually nothing touches them.

Just something to check out, if you can find one, if you get a chance.

steve

Steve,
Did a search and couldn’t find anything on a Pro Musica ST 70 mod. Can you provide a link?
Nick
Title: Re: 300B Mono blocks
Post by: steve on August 03, 2020, 10:06:18 PM
  Other than Border Patrol and Audio Note any suggestions for Rethm Saadhana speakers at 100db ?

charles

Charles, have you considered Pro Musica's 3rd generation upgrade to the Stereo ST-70? After you audition
one of those amps, you won't want a dht amplifier, and I have audition both 2nd, 3rd generation
and dht amps for some 20 years. Pro Musica blows them away in every catagory including "in touch with the music". Dan has both 2nd and 3rd generation amplifier with his LS3/5As, Harbeths etc and virtually nothing touches them.

Just something to check out, if you can find one, if you get a chance.

steve

Steve,
Did a search and couldn’t find anything on a Pro Musica ST 70 mod. Can you provide a link?
Nick

Pro Musica retired, or the guys at least separated some years ago. Difficult to find an amp, Dan found one just a few months ago and immediately snapped it up. So it may be very difficult to find one since few sell theirs.

Don't mean to be a jerkish, just that if you find one, and it works, buy it. Even if a transformer is bad, you may be able to find a used tranny to repair it.

My amps were more accurate, but I never had a descent chassis that looked good and could reliably ship, nor nice looking trannies. That is why I mainly stuck to pre-amplifiers. UPS is nortorious for damaging products, FedEx seems a little better.
DHL was by far the best when they were around.

cheers

steve

 

Title: Re: 300B Mono blocks
Post by: Nick B on August 03, 2020, 11:39:59 PM
Steve,
Did another search and found this. Can’t say I’ve ever seen an ST 70 look this good. The only time I’ve really suffered severe damage from shipping was with Fed Ex. Beautiful speakers I returned to manufacturer were pretty trashed. Had them insured and Fed Ex paid claim promptly.
Nick

https://audioxpress.com/news/the-dynaco-st-70-series-3-tube-amplifier-is-now-finally-shipping
Title: Re: 300B Mono blocks
Post by: steve on August 04, 2020, 08:03:48 AM
Steve,
Did another search and found this. Can’t say I’ve ever seen an ST 70 look this good. The only time I’ve really suffered severe damage from shipping was with Fed Ex. Beautiful speakers I returned to manufacturer were pretty trashed. Had them insured and Fed Ex paid claim promptly.
Nick

https://audioxpress.com/news/the-dynaco-st-70-series-3-tube-amplifier-is-now-finally-shipping

Unfortunately, Pro Musica, Champaign Illinois, is out of business. Yes, this amp looks nice indeed.

When I started in business, UPS damaged just about every professionally double boxed preamplifier. Found out that in
Chitown, a box can literally fall 50 feet. Very early on, tried FedEx and was better, although still some damaged packages. Switched to DHL had no damages at all, not one. Shame about DHL basically closing out USA.

As I recommend, if you find a Promusica Upgraded ST-70, esp 3rd revision, get it.

cheers

steve


Title: Re: 300B Mono blocks
Post by: rollo on August 08, 2020, 12:45:33 PM
  Looking at Tektron. Can use a 2A3, 45 or 300B..

charles
Title: Re: 300B Mono blocks
Post by: Response Audio on August 12, 2020, 11:19:18 AM
I recently finished the design for my personal amp. I have to have different amps for testing other products. I am going with a traditional topology using the 300B for about 8 watts. Will be using upper end components but not overboard. Do have a few "tricks of the trade" that will be utilized that I have come up with over the years. Hope to get some time to start the build over the next few weeks.
This will not be a production product. Strictly for personal and testing purposes. I simply love the 300B sound.

I am [considering] an 845 build down the road.

Any decisions yet Charles on your amp?
Title: Re: 300B Mono blocks
Post by: rollo on August 15, 2020, 09:14:19 AM
  No not yet. Not in a hurry a whim thing. Using 211s now. Also have an Audio Hungary pair of mono blocks using 6C33CI. A pair of Audio Note Legend that needs repair as is was damaged in shipping.



charles
Title: Re: 300B Mono blocks
Post by: Response Audio on August 15, 2020, 10:15:25 AM
Very nice. 211s are power houses. Really like the 6C33 as well. Had a few amps in the past that used these tubes. Forgot about the 6C33. May have to put that back on my list.
Right now working on the purity Master Reference preamp. Been working on this design for the past several years. Prototype auditioning has received great feedback  Finally ready to start the chassis design. Can wait to pair it up with the 300B amp. Now I just need a few more hours in the day. :duh
Title: Re: 300B Mono blocks
Post by: Barry (NJ) on August 18, 2020, 10:39:43 AM
i saw these; look pretty interesting.  i know manley makes nice amps; i had a pair of mahi mahi's; i should have held on to them longer - shortly after i sold them, manley more than doubled the retail prices.  even then, they were worth it, imo.  but an absolute steal, prior...

https://www.usaudiomart.com/details/649644060-manley-neo-classic-sepp-300b-power-amplifiers-price-is-for-the-pair-of-amplifiers/ (https://www.usaudiomart.com/details/649644060-manley-neo-classic-sepp-300b-power-amplifiers-price-is-for-the-pair-of-amplifiers/)

doug s.

Fairly local too, which is nice.
Title: Re: 300B Mono blocks
Post by: rollo on August 18, 2020, 12:51:41 PM
  Thanks for heads up. I would have to hear before a purchase.


charles
Title: Re: 300B Mono blocks
Post by: Barry (NJ) on August 18, 2020, 06:11:25 PM
  Thanks for heads up. I would have to hear before a purchase.

charles

Well, they are in NJ, so not too far if they were something you were interested in...
Title: Re: 300B Mono blocks
Post by: rollo on August 21, 2020, 01:58:18 PM
  Again thank you Dougster. 

charles
Title: Re: 300B Mono blocks
Post by: rollo on September 04, 2020, 05:05:03 PM
   Picked up an Alan Eaton 45 amp. GE 45s and Sylvania 45s. uses 6SN7 as well. Point to point. Now 45 tubes are next. Emission Labs ?? The 6SN7 are Russian. Tungsol coming from Vintage Tube service.


charles
Title: Re: 300B Mono blocks
Post by: toobluvr on September 05, 2020, 07:01:37 AM
I'm guessing this one?

https://www.audiocircle.com/index.php?topic=172218.0
Title: Re: 300B Mono blocks
Post by: rollo on September 05, 2020, 08:46:50 AM
I'm guessing this one?

https://www.audiocircle.com/index.php?topic=172218.0

    That is the one. A start.

charles
Title: Re: 300B Mono blocks
Post by: rollo on September 05, 2020, 08:49:39 AM
   Doug the Speakers are 102db. Will listen to the 45 supplied Sylvania and GE. Then will play around. with 6SN7 or Emission Labs 45 and Hitachi 6SN7.


charles
Title: Re: 300B Mono blocks
Post by: rollo on September 08, 2020, 11:25:02 AM
  Thanks, me as well. Eaton gave me a price of 3K for His 300B Mono Blocks if the 45 does not work out.


charles
Title: Re: 300B Mono blocks
Post by: rollo on September 16, 2020, 11:39:35 AM
if you buy direct from eaton, you may want to consider his 45 or 2a3 monoblocks.

doug s.
  Thanks, me as well. Eaton gave me a price of 3K for His 300B Mono Blocks if the 45 does not work out.


charles


   Thanks bought 45 amp. Want to compare to a Tektron now. Which can use 45, 2A3 and 300B with flipping a switch. However this over achieving Eaton 45 design is so F'n good it just may be tube types now.


charles


Title: Re: 300B Mono blocks
Post by: rollo on September 18, 2020, 10:28:25 AM
i know, charlie; i was just suggesting 45 or 2a3 mono blocks from eaton instead of 300b's, if you decide on checking something else out.  iirc, i suggested the eaton amps to you...  ;)

glad it's working out!  :thumb:

doug s.

Thanks bought 45 amp. Want to compare to a Tektron now. Which can use 45, 2A3 and 300B with flipping a switch. However this over achieving Eaton 45 design is so F'n good it just may be tube types now.


charles


   Thank you Sir. Now looking for RCAs Ballon 45s. Found a pair at $600 NOS. With that price maybe EML 45

charles
Title: Re: 300B Mono blocks
Post by: rollo on September 18, 2020, 01:31:53 PM
before you spend a lot on globe tubes, you may want to check out something like these:
https://www.ebay.com/itm/184370863836 (https://www.ebay.com/itm/184370863836)
https://www.ebay.com/itm/312772567694 (https://www.ebay.com/itm/312772567694)
https://www.ebay.com/itm/254722156896 (https://www.ebay.com/itm/254722156896)
https://www.ebay.com/itm/184452135825 (https://www.ebay.com/itm/184452135825)
https://www.ebay.com/itm/143609013121 (https://www.ebay.com/itm/143609013121)
https://www.ebay.com/itm/184424170455 (https://www.ebay.com/itm/184424170455)

if you have to have the globes, you could try these:
https://www.ebay.com/itm/114408339185 (https://www.ebay.com/itm/114408339185)

these may sell for a bit under $600; hard to say...
https://www.ebay.com/itm/164384287695 (https://www.ebay.com/itm/164384287695)

also, in looking at these, i checked out the eml's.  many folks prefer them over the vintage rca's.  and there's some difference between mesh plate and solid plate.  but, based on one reviewer's comments, (srajan ebaen), since you're using the 45 amp w/ a speaker that has powered subs, you might prefer the mesh plates?  even tho srajan said he liked the solid plates better.
https://6moons.com/audioreviews/EML45/45s.html (https://6moons.com/audioreviews/EML45/45s.html)

doug s.
Thank you Sir. Now looking for RCAs Ballon 45s. Found a pair at $600 NOS. With that price maybe EML 45

charles

  Wow. You are so helpful. Love ya. Thanks Dougster.


charles