Robertson is often associated with a Black 1960 Les Paul Custom, with a white/parchment (rather than black) coloured pick guard, featured in photographs on the Live and Dangerous album and the subsequent video.
However, in an interview Robertson explained that his main guitar remains his original Thin Lizzy Sunburst 1973 Les Paul Deluxe, albeit re-fretted due to wear and with 1959 vintage Gibson Seth Lover PAF humbucker pickups fitted by his guitar technician.
The pickups are without the normal German-silver pick-up covers, a popular modification.

Robertson acquired his Deluxe in 1974, just after joining Thin Lizzy.
It was his main guitar on all of the Lizzy studio albums.
In the autumn of 1977, when he had the pickups on the Deluxe changed, he began using the Custom (photographs taken at the Tower Theater in Upper Darby, Pennsylvania, from October of that year are among the earliest-known images of Robertson using the guitar).
This became his main guitar from then until the early 1980s, when he switched back to the Deluxe (he can be seen with it in some footage with Motorhead).
It has been his main guitar ever since.
Robertson can also be seen playing a white Fender Stratocaster with black pick-guard and a black Gibson SG in mimed footage with Lizzy.
Robertson was filmed playing a Kramer guitar of the period with its distinctive T-section aluminium neck and aluminium headstock on Dedication.

Although associated with Marshall amplifiers (100 watt non-Master Volume Superlead heads and 25 W Celestion Greenback speakers), Robertson has been known to use Mesa Boogie (100 W Dual Rectifier head) and Soundman amplifiers.
The Jailbreak album was recorded using a Carlsbro combo.
Robertson's original wah-pedal is a UK made Colorsound although he sometimes used a Cry Baby wah wah in the 1990s and a borrowed Vox Wah in the "Still in Love with Blues" video (which he cut the rubber feet off of, much to the dismay of host Stuart Bull).

Robertson's use of the WEM Copycat tape echo unit was later replaced by a modern rack mounted digital delay unit.
He used a Black Les Paul custom and mentions he experimented with "Boss Analog Chorus Delay, an MXR Pitch Transposer, Yamaha analogue delays, and MXR 32 band Graphic EQ" during his Motörhead days.


Record producer Tony Visconti mentioned that for "Killer Without A Cause," featured on the Bad Reputation album: 
 
... Robertson plays guitar through the strange talk box, the simple gizmo that Peter Frampton made famous on his successful live album."

On his VHS video "Still in Love with the Blues" Robertson is pictured with a vintage red Les Paul guitar, unusually equipped with soapbar pickups and a trapeze bridge, although it does not feature on the video itself.
Robertson's Facebook page features more information on this instrument: purchased by Thin Lizzy's manager in 1973, the guitar has an unusually lightweight body as it was built by Les Paul himself for his then-wife, guitarist Mary Ford.
Robertson is often associated with a Black 1960 Les Paul Custom, with a white/parchment (rather than black) coloured pick guard, featured in photographs on the Live and Dangerous album and the subsequent video. However, in an interview Robertson explained that his main guitar remains his original Thin Lizzy Sunburst 1973 Les Paul Deluxe, albeit re-fretted due to wear and with 1959 vintage Gibson Seth Lover PAF humbucker pickups fitted by his guitar technician. The pickups are without the normal German-silver pick-up covers, a popular modification.
Robertson acquired his Deluxe in 1974, just after joining Thin Lizzy. It was his main guitar on all of the Lizzy studio albums. In the autumn of 1977, when he had the pickups on the Deluxe changed, he began using the Custom (photographs taken at the Tower Theater in Upper Darby, Pennsylvania, from October of that year are among the earliest-known images of Robertson using the guitar). This became his main guitar from then until the early 1980s, when he switched back to the Deluxe (he can be seen with it in some footage with Motorhead). It has been his main guitar ever since. Robertson can also be seen playing a white Fender Stratocaster with black pick-guard and a black Gibson SG in mimed footage with Lizzy. Robertson was filmed playing a Kramer guitar of the period with its distinctive T-section aluminium neck and aluminium headstock on Dedication.
Although associated with Marshall amplifiers (100 watt non-Master Volume Superlead heads and 25 W Celestion Greenback speakers), Robertson has been known to use Mesa Boogie (100 W Dual Rectifier head) and Soundman amplifiers. The Jailbreak album was recorded using a Carlsbro combo. Robertson's original wah-pedal is a UK made Colorsound although he sometimes used a Cry Baby wah wah in the 1990s and a borrowed Vox Wah in the "Still in Love with Blues" video (which he cut the rubber feet off of, much to the dismay of host Stuart Bull).
Robertson's use of the WEM Copycat tape echo unit was later replaced by a modern rack mounted digital delay unit. He used a Black Les Paul custom and mentions he experimented with "Boss Analog Chorus Delay, an MXR Pitch Transposer, Yamaha analogue delays, and MXR 32 band Graphic EQ" during his Motörhead days.

Record producer Tony Visconti mentioned that for "Killer Without A Cause," featured on the Bad Reputation album: 
 
... Robertson plays guitar through the strange talk box, the simple gizmo that Peter Frampton made famous on his successful live album."
On his VHS video "Still in Love with the Blues" Robertson is pictured with a vintage red Les Paul guitar, unusually equipped with soapbar pickups and a trapeze bridge, although it does not feature on the video itself. Robertson's Facebook page features more information on this instrument: purchased by Thin Lizzy's manager in 1973, the guitar has an unusually lightweight body as it was built by Les Paul himself for his then-wife, guitarist Mary Ford.
Brian Robertson (guitarist)