FU-19 (FM30, 829B) Single-Ended Tube Amp!

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FullRangeMan

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Re: FU-19 (FM30, 829B) Single-Ended Tube Amp!
« Reply #140 on: 14 Mar 2025, 01:10 am »
We are less than a ball  :duh:

renaudrenaud

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Re: FU-19 (FM30, 829B) Single-Ended Tube Amp!
« Reply #141 on: 14 Mar 2025, 01:21 pm »
I realize I said the amp is running but without any pic!




viggen

Re: FU-19 (FM30, 829B) Single-Ended Tube Amp!
« Reply #142 on: 14 Mar 2025, 03:41 pm »

For the different components between the wide and long chassis, the seller explains the long one is marginally better. Don't care too much, I think I will buy also a long wide version, it's too much fun for the price of 100/120€, I mean it is really inexpensive and the sound is pure joy, a touch of tube but not caricatural.

Thanks for the help guys and enjoy your time listening your tubes.

Which one is long and wide one?

FullRangeMan

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Re: FU-19 (FM30, 829B) Single-Ended Tube Amp!
« Reply #143 on: 14 Mar 2025, 07:22 pm »
Which one is long and wide one?


Jon L

Re: FU-19 (FM30, 829B) Single-Ended Tube Amp!
« Reply #144 on: 14 Mar 2025, 07:52 pm »


No, that amp is the FU29 A300 amplifier, different circuit from the "wide" and "long" FU19 amps.

"Wide" amp



"Long" amp







FullRangeMan

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Re: FU-19 (FM30, 829B) Single-Ended Tube Amp!
« Reply #145 on: 14 Mar 2025, 08:08 pm »
With that big choke this is the best version IMO.

mick wolfe

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Re: FU-19 (FM30, 829B) Single-Ended Tube Amp!
« Reply #146 on: 15 Mar 2025, 06:01 pm »
I don't doubt it. I'm not blown away by the FU29 A300 10 watt version.....at least for now. New small signal tubes on the way and a speaker swap out in the works, so I haven't given up yet. Fortunately, I have 4 other amps with the FU29 resting in 5th place at this point. But to be fair, it was a fraction of the cost of the other four.

FullRangeMan

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Re: FU-19 (FM30, 829B) Single-Ended Tube Amp!
« Reply #147 on: 15 Mar 2025, 08:11 pm »
Why would a larger choke make it better?
Could it be the same choke with the end bells making it look larger to you?
Do you can post the other choke image?

FullRangeMan

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Re: FU-19 (FM30, 829B) Single-Ended Tube Amp!
« Reply #148 on: 15 Mar 2025, 09:46 pm »
It has already been posted several times.
So why do you prefer the small choke?

FullRangeMan

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Re: FU-19 (FM30, 829B) Single-Ended Tube Amp!
« Reply #149 on: 16 Mar 2025, 02:18 am »
You and I have not heard either one, but you proclaim the one with the "big choke" is better.
You can not for sure know the choke is larger, let alone that it makes the amplifier the "best" version, it could be electrically the same.
You apparently don't even know what the "small" choke looks like even though it is pictured in this thread several times.
End bells can make something small appear larger.
The amp I mentioned have clearly visible a bigger choke than the other amp with the choke under the chasis, this bigger choke dont fit inside the chassis.

I my experience with tube amps bigger transformers delivery better sound and they heat up less and last longer.

renaudrenaud

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Re: FU-19 (FM30, 829B) Single-Ended Tube Amp!
« Reply #150 on: 17 Mar 2025, 01:33 pm »
Some choke pics.



















I like to take pictures. And the more I listen to my records, the more I like this amp.


FullRangeMan

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Re: FU-19 (FM30, 829B) Single-Ended Tube Amp!
« Reply #151 on: 17 Mar 2025, 03:38 pm »
Clearly you are unaware of the Caver fiasco.

Don't let the Decware owners know your "experience" they will flood the used market selling their awful small transformer/choke amplifiers.

I never can tell when you are joking, maybe if you would take advantage of the emojis.  :lol:
Small chokes run hot, mainly if they are underside and I live in a hot area. Big transformers last longer than small ones, but they are not cheap.

mick wolfe

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Re: FU-19 (FM30, 829B) Single-Ended Tube Amp!
« Reply #152 on: 17 Mar 2025, 05:22 pm »
I don't doubt it. I'm not blown away by the FU29 A300 10 watt version.....at least for now. New small signal tubes on the way and a speaker swap out in the works, so I haven't given up yet. Fortunately, I have 4 other amps with the FU29 resting in 5th place at this point. But to be fair, it was a fraction of the cost of the other four.

Don't want to "choke" off this latest thread, but it's only fair to report that the FU29 A300 has been slowly turning over a new leaf. Probably either thru amp break-in or most likely the NOS JAN Cetron 829B's waking up. Time will tell, but at least now I'm hearing much greater potential.

Tyson

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Re: FU-19 (FM30, 829B) Single-Ended Tube Amp!
« Reply #153 on: 17 Mar 2025, 06:46 pm »
Don't want to "choke" off this latest thread, but it's only fair to report that the FU29 A300 has been slowly turning over a new leaf. Probably either thru amp break-in or most likely the NOS JAN Cetron 829B's waking up. Time will tell, but at least now I'm hearing much greater potential.

When I get mine, there's a few mods I always do to any amp I buy - replace the RCA connectors with ultra premium connectors.  Re-wire the internal signal wire with VH Audio ultrapure hookup wire.  Change the speaker binding posts to high end posts.  Bypass the volume pot.  Disconnect the wireless receiver.  And if there's any film caps in the signal path, upgrade them to Miflex copper film caps.  Those things usually take an amp up quite a bit in performance levels. 

aricml

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Re: FU-19 (FM30, 829B) Single-Ended Tube Amp!
« Reply #154 on: 17 Mar 2025, 09:53 pm »
When I get mine, there's a few mods I always do to any amp I buy - replace the RCA connectors with ultra premium connectors.  Re-wire the internal signal wire with VH Audio ultrapure hookup wire.  Change the speaker binding posts to high end posts.  Bypass the volume pot.  Disconnect the wireless receiver.  And if there's any film caps in the signal path, upgrade them to Miflex copper film caps.  Those things usually take an amp up quite a bit in performance levels.

Do you do these mods before firing it up, or do you listen to the stock configuration for a while and then do the mods to see just how many notches you're kicking it up?

I too look forward to tinkering with mine, but think I will give it some time first so i can mentally log the changes.

Tyson

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Re: FU-19 (FM30, 829B) Single-Ended Tube Amp!
« Reply #155 on: 18 Mar 2025, 02:46 am »
Do you do these mods before firing it up, or do you listen to the stock configuration for a while and then do the mods to see just how many notches you're kicking it up?

I too look forward to tinkering with mine, but think I will give it some time first so i can mentally log the changes.

I usually run it for a while in stock form, just to make sure nothing blows up, hahaha.  After that I will do the mods.

Jon L

Re: FU-19 (FM30, 829B) Single-Ended Tube Amp!
« Reply #156 on: 18 Mar 2025, 11:59 pm »
Received the VOSKHOD 6N2P (not 6N2P-EV) and can confirm it is a direct replacement for Chinese 6N2.  It sounds rather good, too, but I must say I still haven't found a bad sounding tube in this amp, both in 6N2 and FM30/829B spots  :thumb:

 0318251634 by drjlo2, on Flickr

jk@home

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Re: FU-19 (FM30, 829B) Single-Ended Tube Amp!
« Reply #157 on: 19 Mar 2025, 09:49 am »
I found these amps listed on Amazon (down the page a bit). The higher prices are with the shipping included. I imagine I can do better than this? Maybe Ebay? Know vaguely about the tariff situation, but I notice that the Lii drivers I bought from Amazon (shipped directly from China) are the same price as before.

https://www.amazon.com/stores/page/1574A58B-4AA7-4187-8101-278AEB842080

Looks like they have two versions of the "long amp". The only difference I can see in the description is gray vs black chassis. Quite a price difference, they look the same to me.  :?

Jon L

Re: FU-19 (FM30, 829B) Single-Ended Tube Amp!
« Reply #158 on: 20 Mar 2025, 09:19 pm »
Know vaguely about the tariff situation

There exists "de minimis" tariff exemption for product under $800.  POTUS eliminated the exemption a month ago but then announced it will stay until U.S. Commerce Department establishes a system to "fully and expediently process and collect tariff revenue."

Yeah, I did order a few more items past week  :o

FullRangeMan

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Re: FU-19 (FM30, 829B) Single-Ended Tube Amp!
« Reply #159 on: 21 Mar 2025, 02:56 am »
I read about under $500 are free of charge, do you confirm it?