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Discussion Starter #1
(2) PHASS Hybrid Tube Amps.
TP 4.100
TP 2.150

Both were sent to Gordon Taylor at Amp Doctor and received full Gold Package upgrades.

input caps Upgrade to Low ESR 4700uF types

Rail caps: Upgrade from 2200uF to 4700uF x 6 - better midbass 'weight'

Input chips: OP275 x 2 upgrade to LME49720, uPC4072 x 2 to LME49880

Drivers to be upgraded and mounted to heatsink. Bias sensor moved to contact output devices.

Bias adjusters fitted and bias optimised using analyser.

Re x 8 reduced to 0r15 5WS so amp makes rated power into 2 ohms.

Modifications costs for both amps $450 including shipping and VAT

these are amazing sounding amplifiers.
As with any Class A or similar designed amp, these will run hot.

Amps were used for past few months in my competition car.

being a Sound Quality competitor, I need to change to something with better support for competitors.

my loss is your gain.

*also comes with the original tubes and some extra tubes


$1000ea shipped CONUS

$1900 Shipped Package deal


need to sell ASAP








 

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WOWZERS.. Those are pretty....

I wonder how many of these were produced?? Can't be many...

There is not much info on these online, at least in english.(translating didn't do much better)

Do these utilize Tubes in the output section or are they tube preamp only?

Seeing the word Hybrid leads me to believe they are tube pre-amp w/more conventional power amplifier section..
 

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WOWZERS.. Those are pretty....

I wonder how many of these were produced?? Can't be many...

There is not much info on these online, at least in english.(translating didn't do much better)

Do these utilize Tubes in the output section or are they tube preamp only?

Seeing the word Hybrid leads me to believe they are tube pre-amp w/more conventional power amplifier section..
You're correct, they only have tube pre-amps.

https://phass.sharepoint.com/Pages/APandTPamplifiers.aspx
 

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Discussion Starter #6
WOWZERS.. Those are pretty....

I wonder how many of these were produced?? Can't be many...

There is not much info on these online, at least in english.(translating didn't do much better)

Do these utilize Tubes in the output section or are they tube preamp only?

Seeing the word Hybrid leads me to believe they are tube pre-amp w/more conventional power amplifier section..
They are in the preamp section. But the tubes do add a nice warmth to the overall sound. Class A bias makes them great with overall detail and clarity.
 

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They are in the preamp section. But the tubes do add a nice warmth to the overall sound. Class A bias makes them great with overall detail and clarity.
I'm sure, and would grab these if I had the funds. GLWS!
 

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These are beautiful. Sad to see them leaving your car Mic but I'm sure you have something cool up your sleeve as usual. Glad I got to hear them in the Acura before they make their way to a new owner. Someone is going to be VERY happy with these. :)
 

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Weekend bump
 

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I have some interest but noone has paid yet. Would really like to sell as a pair, but will split up if I really have to
 

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sold pending payment
 
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