St. James – US
Saint James


Let There Be Light
When it comes to tone and that all-important ‘feel’ factor, great valve amps rightfully remain the ‘gold standard’. The trouble is that great ones capable of delivering 50 Watts or more are all back-breakingly heavy. Until now… enter St. James Series – the lightest 50 Watt valve guitar amps on earth.

Uncompromising Sound
Hundreds of hours of critical listening against the most revered amplifier references mean St. James raises the sonic benchmark again. In addition to the obvious tonal differences between EL34 and 6L6 power valves, both of the St. James designs are honed to their own particular use case. The St. James EL34 is the amp for Classic tones combining world-class British Crunch and jaw-dropping, very US-sounding Cleans. The 6L6 version has the same clean headroom, but this is coupled with Blackstar’s highest gain Overdrive circuit to date.

Studio Ready
St. James amps are packed with cutting-edge features to deliver class-leading recording performance. From 50W, 2W and SAG switchable power modes, to an inbuilt reactive load that routes the post-power valve output signal to the amp’s three direct recording outputs (XLR, Stereo Line-Out and USB) for truly authentic ‘amp-in-a-room’ feel. This is then passed through our state-of-the-art and fully customisable CabRig™️ DSP speaker simulator.

Up to 47% Lighter Than a Traditional 50W Valve Amp

St. James 50 EL34 Head
St. James 50 EL34 Head
- 50W head (6.7kg)
- 2 x EL34 and 2x ECC83
- Inbuilt reactive load with CabRig™ DSP
- Classic low gain pedal platform with +10dB clean boost

St. James 50 6L6 Head
St. James 50 6L6 Head
- 50W head (6.7kg)
- 2 x 6L6 and 2x ECC83
- Inbuilt reactive load with CabRig™ DSP
- Classic US clean and modern high gain with voice switch

St. James 50 EL34 Combo
St. James 50 EL34 Combo
- 50W combo (12.8kg)
- 2 x EL34 and 2x ECC83
- Inbuilt reactive load with CabRig™ DSP
- Classic low gain pedal platform with +10dB clean boost

St. James 50 6L6 Combo
St. James 50 6L6 Combo
- 50W combo (12.8kg)
- 2 x 6L6 and 2x ECC83
- Inbuilt reactive load with CabRig™ DSP
- Classic US clean and modern high gain with voice switch

St. James 212VOC Black Cabinet
St. James 212VOC Black Cabinet
- Vertical 2x12 cabinet (13.6kg)
- 2x 12" Celestion Zephyr speakers
- Removable rear panel for open/close back
- Black tolex & 'silver birch' fret

St. James 212VOC Fawn Cabinet
St. James 212VOC Fawn Cabinet
- Vertical 2x12 cabinet (13.6kg)
- 2x 12" Celestion Zephyr speakers
- Removable rear panel for open/close back
- Fawn tolex & black basketweave fret
Award Winning Amps

The Story
We had two main goals in designing the St. James amps. To create the world's lightest valve amps whilst retaining all the elements of a traditional design with no compromise in tone or performance. And, to include everything within one box to enable the output of authentic ‘mic’d cabinet-of-a-hard-driven-valve-amp-in-a-room’ sounds, direct to stage box or recording device..

What Do They Sound Like?
After months of forensic examination of the most revered vintage valve amps in the world, St. James take these tones to the next level. Aside from the obvious power valve choices, the EL34 and 6L6 models each have their own distinct tonal characteristics appealing to different players.

Reactive Load
Our inbuilt reactive load and pro connections make St. James perfect for silent stages and recording. The reactive load mimics the electrical response of a typical loudspeaker to deliver the authentic valve power-amp tones possible in the studio or at home. No need for expensive additional outboard equipment....

CabRig™
CabRig overcomes the shortcomings of IR ‘snapshots’ by using state-of-the-art digital processing to reproduce the sound and feel of a mic’d up guitar cab in incredible detail. Over 250 mic and cab combinations can be saved into one of the three onboard slots. Each cab has a choice of mic type and axis, alongside room mics and master EQ. Connect to the free Architect software for more deep-dive options.
Pro Connectivity
With more musicians recording at home, or playing on silent stages, St. James is perfect for the way we play today, with USB audio connectivity for pro-recording and an XLR D.I. for professional live use, both using the inbuilt reactive load and CabRig DSP speaker simulation.
Revolutionary Speaker
We worked closely with Celestion to develop the unique Zephyr lightweight ferrite speaker. The Zephyr accurately emulates the rich sound and performance of Celestion’s iconic “Vintage 30” speaker at a fraction of the weight – and this is achieved with a traditional ferrite magnet not a neodymium one.
Lightweight With No Compromise
Candlenut plywood is used for strength and lightness and its beneficial acoustic proprieties, creating a roadworthy cabinet that sounds great and won’t let you down.
Universal Voltage
The St. James range uses highly efficient, lightweight power transformers designed around modern SMPS (Switched-Mode Power Supply) technology. More than 3 years of intense R&D have delivered all the benefits of SMPS, namely lightweight and universal voltage compatibility, whilst retaining the sound and feel of a traditional iron-core transformer. The resulting revolutionary transformer technology is patent pending.
SKU












- Ultra-lightweight 50 Watt 2×12 combo (16.8kg)
- 2 x ECC83, 2 x 6L6
- Two footswitchable channels
- Footswitchable Channel II Voice (OD 1 / OD 2)
- 50W / 2W / Sag power reduction
- Master Volume
- Digital Reverb
- Effects loop with effects level switch
- USB audio output
- Cab Rig advanced DSP cabinet simulator
- XLR D.I. output
- Exclusive 2×12″ Celestion G12Z-70 ‘Zephyr’
- 2x 8 Ohm custom-designed, lightweight speakers
- Cab Rig advanced DSP cabinet simulator
- Footcontroller included
- Stunning boutique look including illuminated logo
- Ultra-lightweight 50 Watt 2×12 combo (16.8kg)
- 2 x ECC83, 2 x 6L6
- Two footswitchable channels
- Footswitchable Channel II Voice (OD 1 / OD 2)
- 50W / 2W / Sag power reduction
- Master Volume
- Digital Reverb
- Effects loop with effects level switch
- USB audio output
- Cab Rig advanced DSP cabinet simulator
- XLR D.I. output
- Exclusive 2×12″ Celestion G12Z-70 ‘Zephyr’
- 2x 8 Ohm custom-designed, lightweight speakers
- Cab Rig advanced DSP cabinet simulator
- Footcontroller included
- Stunning boutique look including illuminated logo
- Ultra-lightweight 50 Watt head
- 2 x ECC83, 2 x EL34
- Two footswitchable channels
- Footswitchable Channel II Boost (‘top boost’)
- 50W / 2W / Sag power reduction
- Master Volume
- Digital Reverb
- Effects loop with effects level switch
- USB audio output
- XLR D.I. output
- Cab Rig advanced DSP cabinet simulator
- Footcontroller included
- Stunning boutique look including illuminated logo
- Ultra-lightweight 50 Watt combo (12.8kg)
- 2 x ECC83, 2 x 6L6
- Two footswitchable channels
- Footswitchable Channel II Voice (OD 1 / OD 2)
- 50W / 2W / Sag power reduction
- Master Volume
- Digital Reverb
- Effects loop with effects level switch
- USB audio output
- Cab Rig advanced DSP cabinet simulator
- XLR D.I. output
- Exclusive 1×12″ Celestion G12Z-70 ‘Zephyr’
- 16 Ohm custom-designed, lightweight speaker
- Cab Rig advanced DSP cabinet simulator
- Footcontroller included
- Stunning boutique look including illuminated logo
- Ultra-lightweight 50 Watt head
- 2 x ECC83, 2 x 6L6
- Two footswitchable channels
- Footswitchable Channel II Voice (OD 1 / OD 2)
- 50W / 2W / Sag power reduction
- Master Volume
- Digital Reverb
- Effects loop with effects level switch
- USB audio output
- XLR D.I. output
- Ultra-lightweight 50 Watt combo (12.8kg)
- 2 x ECC83, 2 x EL34
- Two footswitchable channels
- Footswitchable Channel II Boost (‘top boost’)
- 50W / 2W / Sag power reduction
- Master Volume
- Digital Reverb
- Effects loop with effects level switch
- USB audio output
- Cab Rig advanced DSP cabinet simulator
- XLR D.I. output
- Exclusive 1×12″ Celestion G12Z-70 ‘Zephyr’
- 16 Ohm custom-designed, lightweight speaker
- Cab Rig advanced DSP cabinet simulator
- Footcontroller included
- Stunning boutique look including illuminated logo
“Strikingly compact and lightweight for a head and cab; when I heard St. James, it was love at first riff.”
Will Sergeant
Echo & the Bunnymen

“This is the combo I have been waiting 40 years for.”
Elliot Easton
The Cars
“The St. James is the ideal amp for me. It sounds great, looks boss and is so easy for me to gig with as it’s so light for a valve amp!”
Zuzu

“The St. James is a little miracle! Super light, super loud, and very versatile. Besides the huge valve tone, I love the Cab Rig features; it sounds great straight out of the amp into a DAW or mixing board.”
Gus G.
Firewind, Ozzy Osbourne

“The St. James is perfect for all things Crawlers – super light and great tone!”
Amy Woodall
Crawlers

“Wow. They’re awesome dude – they really are.”
Michael Carter
Luke Bryan
“The St. James EL34 head pairs amazingly with pedals to bring a clarity I couldn’t find with other amps.”
Elliot Gill
STONE

“Jeez! Is this legal? This is cool man, that’s f***ing light!”
Jared James Nichols
“Warm, well rounded and rocky at the same time. It sounds beautiful and is so light for a 50w valve amp!”
Toby Lee

”St. James punches you right in the face like a suitcase full of mustard”

“Ready to go badass tone.”
Nick DePirro
Night Verses
“I’m digging it!”
Steve Conte
Michael Monroe
“I’m all about vibe and feel, and that amp makes me want to play it.”
Alyssa Bonagura
“Probably one of my favourite guitar sounds ever!”
Darren Hurst
Producer, Guitar Tech - Peter Frampton
“That sounds killer!”
Charlie Paulson
Goldfinger
