Mark Knopfler’s brown Fender Vibrolux vs Fender Vibroverb

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This post is about two of Mark Knopfler’s Fender vintage amps, the brown Fender Vibrolux – the  Sultans of Swing amp that was covered in this blog article – and the similar-sized and similar-looking brown Fender Vibroverb.

The Fender Vibrolux (model 6G11a) was one of Knopfler’s earliest guitar amps. Probably it belonged to Dire Straits’ bass player John Illsley and was used for the first demo recordings of Dire Straits, and also for the first record and for their live gigs of this time (late 1977 – early 1978). He still owns this amp and used it regularly on the last albums.

The brown Vibroverb (model 6G16) was a much later addition to Knopfler’s amp arsenal. From what I heard he got it probably in the late 1990ies with some help of John Suhr, and used it e.g. on some Notting Hillbillies gigs of that time.

Both amps were only produced for a very short time: the brown Vibrolux from 1961 – 62, and the brown Vibroverb in 1963  only. Consequently, both are ultra rare. The Vibroverb was reissued in the early 1990ies (1990 – 95).

Both amps have a lot in common: two channels with a  similar pre-amp layout (same tone controls, same pre-amp circuit), about 30 watts from two 6L6 tubes,  tremolo, and of course the same design like as all amps from the brown tolex era (wheat cover grill, brown barrel knobs, brown tolex etc.). Note that both – like all brown face amps – don’t feature bright switches. Nevertheless, the little capacitor to boost treble that is normally added with the bright switch is still present on the right channel of both amps, so imagine these amps as bright switch off for the left channel and bright switch on for the right channel.


The major differences are the speaker configuration – one 12″ Oxford speaker in the Vibrolux but two 10″ Oxford speakers in the Vibroverb – and the reverb which was only  featured in the Vibroverb. In fact, the Vibroverb was the first Fender amp with reverb, and the only one of the brown tolex era. The Fender spring reverb was available with the brown tolex reverb unit and was later – to be concrete with the introduction of the black face design – added to most of the Fender guitar amplifiers. This combination of features – two 10″ speakers with reverb and tremolo in a middle -sized tube amp – turned the Vibroverb to one of the all-time favourites for many players.

Normally it is easy to distinguish both amps on pictures because only the Vibroverb had the grill-mounted Fender logo, while the Vibrolux and other small Fender amps had no grill logo. However, Knopfler’s Vibrolux has a non-original Fender logo that was apparently added later (the logo itself looks like the ones from the black or silver face era).  Normally there is a special piece of wood for the logo screws, but not so on the Vibrolux. For this reason, the logo on Knopfler’s amp had to be moved extremely into the upper left corner of the grill so that the  logo screws hit the wooden frame of the grill front. Other optical differences: only the Vibroverb has those tilt legs on the sides, and the Vibroverb has one additional control – the reverb control on the second channel – so that is has a total of 9 controls (vol, treble, bass / vol, treble, bass, reverb / speed, intensity). This and the two 10″ speakers are the reasonwhy the Vibroverb is a bit wider than the Vibrolux.

The Fender Vibrolux in the studio in the mid 90ies. This picture shows why the (non-original) Fender logo has to be located in the extreme upper left corner of the front grill which makes it easy to identify this amp even on low quality pictures.


Both Mark Knopfler and Steve Phillips play a brown Vibroverb on stage on this charity gig in 2002.
A brown 1961 Fender Vibrolux
A brown Fender Vibroverb. This amp was produced in 1963 only.

The amp in the background on this video clip from is the brown Vibrolux, as the position of the logo tells.

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Rare video of Brendan Crocker gig featuring Mark Knopfler

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Today while surfing youtube I found this rare video which I have never seen before, showing Mark Knopfler as a guest on a Brendan Crocker gig in Leeds, June 18, 1989 (the youtube video title says July 18, June 18 is confirmed and I doubt that there was a second gig one month later). For those who don’t know him, Brendan Crocker is an old friend of Mark’s, also a member of the Notting Hillbillies.

Another guest on this gig was Dire Straits keyboarder Alan Clark.

Mark plays his Pensa MK-1, and on the right side of the stage- next to the bass player – we can spot his Sultans-of-Swing amp, the brown Fender Vibrolux.

I still have a vinyl Brendan Crocker EP single with three tracks from this gig (You Don’t Need Me Here, Railroad Blues, Georgia Crawl)

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Sultans of Swing – The alternate single version and the demo version – sound and gear

Posted on 9 CommentsPosted in Amps, Effects, Guitars, Mark Knopfler gear, Misc, Recording

Dire Straits’ first hit was Sultans of Swing, recorded in Basing Street studios, February 1978. But did you know that there was a different studio recording before (demo version, Pathway Studios, July 1977), and also a later recording (Pathway Studios, April 1978) that was recorded to be released as a single in some countries?

The demo version

This version was recorded on July 2, 1977, together with four other song (Wild West End, Down to the Waterline, Water of Love, and Sarcred Loving which was written by David Knopfler and was never released). The band had just started a few weeks before, and after rehearsing these first original songs they decided to book a small studio – Pathway Studios  – to produce a demo tape. The session cost them about 180 GBP. We all know what happened later: Radio DJ Charlie Gillet played these demo tapes in his Honky Tonk radio show, and the band finally got their record contract at the end of that year.

Pathway Studios was a tiny 8-track demo studio in Islington, London. Here is a quote I found about it in the Wikipedia. Note that it seems to refer to some later point as Alesis digital reverbs were definitely not available in 1977:

“The studio was very small, about 8 x 8 metres with a 2 x 2m control booth in the corner and an upright piano next to it. You could just squeeze three people into the control booth! The tape deck was a Brenell 1 inch 8 track. The monitors and desk were custom made, and they had a pair of Auratones as well, fed from Quad power amps. The desk was quite small, pushed hard against the front wall with the custom monitors hung above and the Auratones on the meter bridge. Outboard was very basic: a Bel delay line, an Alesis digital reverb and Drawmer gates, but they had a nice plate reverb in a cupboard in the office upstairs. I can’t recall all the mics but they were the industry standard stuff. We got big warm sounding mixes and despite the cramped conditions the mixing process seemed effortless compared to the difficult digital learning curve I have been on in the last two years.”

The following two pictures show Squeeze recording there in 1976.

pathway studios 1

pathway studios 2

This Sultans of Swing version (and only this song) was later released on a compilation album called the Honky Tonk demos by Oval records (see below for sound clip).

The single version

After the recording of the first Dire Straits album at Basing Street Studios (February 13 – March 5, 1978), the results were played to Phonogram’s marketing people. Some of them thought that Sultans of Swing was too polished and smooth sounding for a single that is accepted by the radio, so they re-recorded this song on April 20 / 26, 1978, again at Pathway Studios. This single was released in some countries, among them England and Germany, while in others the album version was released (e.g. in the Netherlands or the US). In some countries,  e.g. the former Yugoslavia, one verse (#5, “And a crowd of young boys…”) was cut off to decrease the overall length which – with almost 6 minutes – was rather long for the radio. This version features more distortion and compression, it indeed sounds more like  rock music. It even appears to be a bit faster although it is practically not. It seems it was never released on CD (see below for sound clip).

Sound and gear on these versions

On the demo version Mark Knopfler played most likely his 1961  Stratocaster (S-No #68354) , at this time he only had one Strat. It was probably not painted red yet but had a wood finish. The pick-up position seems to be the middle pick-up. The sound engineer at Pathway – Chas Herington – was later the  lighting designer on the Brothers in Arms tour  in the mid 80ies. It was 1985 in Arnhem, Netherlands, when I spoke with him and asked him about the equipment on these sessions. He told me that Mark played an old Fender Vibrolux amp which was recorded with a Neumann microphone. He also stated that Mark’s typical sound came out of the amp this way, and was not created with outboard effects and processing.
I assume that on the single version Mark Knopfler played his maple-neck Strat (S-No. #80470), also through the Vibrolux. This time there is a subtle distortion, possibly also compression (remember the rumour about the Dan Armstrong Orange Squeezer). The pick-up position seems to be bridge & middle to achieve that nasal sound.

Sound clips

Here are sound clips with excerpts from both versions.
Demo version (from CD)

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Single version (from vinyl single)

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Note that Mark also plays one of the two rhythm guitars on both tracks.

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