Blackstar St. James 50 Watt EL34 Equipped Electric Guitar Amp Combo

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. The St. James EL34 is the amp for Classic tones combining world-class British Crunch and jaw-dropping, very US-sounding Cleans.

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 customizable Cab Rig™️ DSP speaker simulator.


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 Cab Rig DSP speaker simunlation

Revolutionary Speaker

Blackstar 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 acheived 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 (Switch-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.


  • Ultra-lightweight 50 Watt Head
  • 2x ECC83, 2x EL34
  • Two Footswitchable Channels
  • Footswitchable Channel II Boost ('Top Boost')
  • 50 Watt/ 2 Watt / 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
  • Exclusive 1x12" Celestion G12Z-70 'Zephyr'
  • 8 Ohm Custom Designed, Lightweight Speaker
  • Footcontroller Included
  • Stunning Boutique Look including Illuminated Logo