This was Tony’s main amp since the time Paranoid came out, up until the very late 80s.

The sidebar to this interview with Premier Guitar magazine lists some of the gear Corgan used while recording the Smashing Pumpkins' Cyr album. It includes a 70's Supergroup amp head.

Geezer used Laney Supergroup Heads in the early Sabbath Years, as well as Tony Iommi, as you can see in the performance from 1970.

(original vid: https://www.youtube.com/watch?v=6yZA4TC_pt4 // was removed)

"Also for Sleep’s The Sciences, I fired up my 1968 Laney “Supergroup” LA60BL that was modded by Bryan Sours of Sour Sound in Portland. It’s only 50 watts, but whatever he did to that old head, it now roars like an angry god. I just plugged straight in, dimed it, and that head just screams Master of Reality."

shown in detail at 7:52 in this video.

In this picture Rusty can be seen with his Laney Supergroup 100 amplifier during some recording sessions with Paul McCartney.

The supergroup is also referenced in his Wikipedia article: https://en.wikipedia.org/wiki/Rusty_Anderson#Gear

"While discovering a ceiling water leak in my basement studio I uncovered this...an EARLY Laney Supergroup 100watt patiently waiting to be restored. One day"

A certain "Anje" was the owner of theMcPhee's "MK1 Supergroup" 100W ampilifier with a custom covering, as featured in a November 24, 2004 The Les Paul Forum post, a August 1, 2005 The Les Paul Forum post, a July 30, 2020 The Gear Page reply, and a May 26, 2021 The Gear Page reply. Another in a standard covering can be seen in the background of this photo. The amp is also mentioned in the following sources, among which is the "Any Questions?" column of the June 5, 1971 issue of Melody Maker, which specifies that the amp was modified.

ZigZag, March 1971, "Tony McPhee... Groundhog" by John Tobler

Let’s get onto your equipment....why the change to Laney gear?

Well, I liked the stuff we used to have but it just literally became obsolete. I built my own amplifier and it was what I wanted, but I never got round to putting it in a cabinet and people used to drop it because it was just mounted in a sort of rabbit hutch thing and wasn’t screwed in properly. But I couldn’t replace the broken parts because they were so old, and we had to think about some new gear. We shopped around — looked at HiWatt and Marshall, but eventually settled for Laney. There’s not really much to choose between makes, but this Laney stuff gave out what it claimed to give out and seemed OK....though I’ve made some alterations to improve the tone, because I’m as interested in getting a good sound as I am in volume.

What do these watt ratings mean? Can you give us a layman’s definition?

The wattage is an electrical term, but sound power is also termed in watts. Ten watts of audio power, acoustically, is a very large orchestra; but when you say 10 watts electrically, it’s 10 watts that the amplifier gives out....and any speakers are, at the most, only ten per cent efficient — so the sound power given out is only one watt. You can go up to about 30 watts, and each step of 10 watts is about twice as loud. But above that it gets a lot more complicated, and to get twice the volume of 30 watts, you’d have to have about 200 watts....and to get twice as loud as 200 watts, you’d need about 2000 watts. But it’s the quality that’s important rather than sheer volume.

[...]

I’ve also got an octave splitter which sounds great through the Laney gear [...]

Beat, May 1971, "Groundhogs' 'Split'" by T.T., pg. 17

The amps that Groundhogs favour ('our old stuff was great but it was falling apart and it was all different plugs anyway') is Laney, which, says Tony, is the best deal in gear they could find. He and Peter each have two stacks of Laney equipment—'it gives out what it claims'—and are very satisfied, although there are some longings for their old gear (sentimentality, possibly).

Melody Maker, June 5, 1971, pg. 34, Any Questions?

I use a Laney 100-Watt stack, [...]

Hogwash liner notes

3 Laney 100 watt. Amps

Beat, March 1976, "Tony McPhee: The Hogs Return" by Chris Simmons, pg. 25

Amps

In the amplification department, Tony is still undecided as to what he will use for the gigs. "I used to have a big Laney cabinet, and I'll probably end up using that. I have been in the studio with a Davoli amp (with a 15" speaker) which is great for straight things, but as soon as I put my Hi-Fli through it it just breaks up. Perhaps I'll end up driving the Davoli through the Laney cab, but I'll have to experiment more fully first. Actually, the real problem is not amplifying the guitar but my synthesizer.

Distort

"You need a system that won't distort the sound and still has enough poke behind it to carry. On certain gigs you will find that the set-up you have is perfect and on others you will hate it. Then, another problem is that I need a whole lot of top as I use my fingers instead of a pick. Recording is obviously a different bag; I use a pick in the studio to pick out definite notes clearly. It doesn't matter on stage but when you use your fingers some notes are a little down on others. Anyway, if one note's a bummer so what? The main thing is feel."

Anje, The Les Paul Forum, November 24, 2004

I've just got this cute little baby :

[Laney.jpg]

It's a nice Supergroups from about the late 60's (that was owned by Tony McPhee of the Groundhogs BTW)

Anje, The Les Paul Forum, August 1, 2005

here's my played collection, splitted on 2 continents for now :) :

[...]

'69 Laney Supergroup 100 (belonged to Tony McPhee of the Groundhogs, who did a little custom psyche tolex job, nice :) )

Anje, The Gear Page, Jul 30, 2020

Echoplexi said:

Man, makes me miss my old Klipp 60! These old Laneys are so cool.

I think the dude from The Groudhogs (Tony McPhee?)was a Laney player back in the day too. Great player

Yes I can confirm that:

That's my old one I mentioned before, former Tony's / The Groundhogs's; miss it too.

[https://i.imgur.com/Wu7DT8b.jpg]

[https://i.imgur.com/WvcedrV.jpg]

[https://i.imgur.com/XhmKJVI.jpg]

Anje, The Gear Page, May 26, 2021

I remember visiting Roger Daguet 15-20 years ago (to buy one of former Tony McPhee's late 60's Laney Supergroup, but that's another story) [...]

In the video for "Capricorn" you can clearly see an Laney Supergroup on an Orange 4x12 cab. In an interview Mark says he's using Laney Supergroups in the studio mainly.

In the Wikimedia image titled "JohnGossard3.jpg," John Gossard is pictured using a Laney Supergroup LA100BL guitar amplifier head.

Listed among Cruickshank's equipment in the liner notes of Hogwash and mentioned by The Groundhogs bandmate Tony McPhee in a May 1971 Beat interview. It can also be seen in a photo of The Groundhogs posted to Facebook by Basket Case on November 20, 2013.

Beat, May 1971, "Groundhogs' 'Split'" by T.T., pg. 17

The amps that Groundhogs favour ('our old stuff was great but it was falling apart and it was all different plugs anyway') is Laney, which, says Tony, is the best deal in gear they could find. He and Peter each have two stacks of Laney equipment—'it gives out what it claims'—and are very satisfied, although there are some longings for their old gear (sentimentality, possibly).

Hogwash liner notes

3 Laney 100 watt. Amps.