New KT150 tubes?

There are a quite a few ARC amps where the tubes will not clear the top cover. Be advised.

Thanks Johnny R ... finally a straight no BS answer.

Johnny, one other question. The GS-150 and Ref 150 spec identically on the ARC site. Everything .... distortion, power supply, bandwidth, whatever. So what changed??

Also, will ARC sell KT-150 tubes for regular stock Ref amps and at what price?

Johnny ... you are the best.

Note to self: Start selling larger tube cages and top covers to ARC amp owners with KT150s...maybe a lid bulge?

@Bifwynne, what little I have managed to extract thus far,

Rewound Output Transformers ?!?!? Although I cannot see ARC not utilising the extant Cores and bobbins as sported on the Ref150.

A reworked, and 'perhaps' influential , shortened circuit topology, with a handfull of resistors and the odd capacitor enabling optimisation of the KT150.

And , errr, yes, KT150's.

For my part I am somewhat disappointed that the facility of the 16 Ohm tap has been omitted, however were this to enable the utilization of an improved winding spec then C'est la Vie.

Jasper.

Jasper .... I am perplexed by the hype surrounding the GS-150. On paper, the GS-150 specs identically to the Ref 150, except for the KT-150s and possibly a different output tranny.

I am sufficiently familiar with ARC's product line to have the status to ask ... what changed? Maybe better passives??? .... maybe the output trannies sound better??? I would like to understand why and how the GS-150 is better and different than the Ref 150, other than its new "package" and use of KT-150 tubes.

BIF

P.S. I am getting an uncomfortable feeling that ARC's old guard is being replaced by marketing/business geeks. An old saw from business school is that if you can't improve the product, ... change the package. I am concerned that that is what the GS-150 may be ... a Ref 150 in a new package.

I look forward to being proved wrong because I am an ARC fan.