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Blackstar St. James 50W 6L6 combo amp with 12-inch speaker, 12.8 kg

Blackstar Amplifiers

Blackstar St. James 50W 6L6 guitar amplifier combo 12.8 kg

SKU CH-3RBY-GS67M

A 50 W 6L6 tube combo weighing 12.8 kg with a 16 Ohm Celestion G12Z-70 Zephyr speaker, two footswitchable channels, USB audio, XLR D.I. and Cab Rig DSP

  • Ultra-lightweight 12.8 kg design for easy transport
  • 50 W all-valve power with 6L6 tubes
  • Two footswitchable channels plus switchable OD voices
  • XLR D.I. and USB audio outputs for recording
  • 12-inch Celestion G12Z-70 Zephyr speaker at 16 Ohm

Lightweight 50W valve combo

The St. James 50W 6L6 is an ultra-lightweight valve guitar amplifier combo weighing 12.8 kg. It delivers 50 watts of tube power through a custom-designed 16 Ohm lightweight speaker. Two footswitchable channels provide clean and overdrive voices, with Channel II offering two selectable overdrive modes. This combo targets gigging guitarists who need portable, high-headroom valve tone.

Sustained output with power scaling

Three switchable power modes (50W, 2W and SAG) let the amplifier maintain consistent behaviour at stage or studio volumes. The 6L6 output stage provides clean headroom that stays composed under sustained playing, while Blackstar's highest-gain overdrive circuit remains tight when pushed. An effects loop with level switch integrates pedals without signal degradation during long sets.

Studio-ready connectivity and build

An XLR D.I. output and USB audio interface enable direct recording and re-amping without external hardware. The Cab Rig advanced DSP cabinet simulator delivers microphone-ready tones straight to a DAW or front-of-house desk. A single 12-inch Celestion G12Z-70 Zephyr speaker handles the full output, and the illuminated logo adds visual identification on dark stages.

Highlights

  • Ultra-lightweight 12.8 kg design for easy transport
  • 50 W all-valve power with 6L6 tubes
  • Two footswitchable channels plus switchable OD voices
  • XLR D.I. and USB audio outputs for recording
  • 12-inch Celestion G12Z-70 Zephyr speaker at 16 Ohm

Specifications

No published specifications for this item yet.

Questions about this item

How much heat and noise does the 50 W 6L6 valve stage produce during long rehearsals?

The 50 W 6L6 output stage runs at full valve voltage, so it generates noticeable heat after extended use; the lightweight 16 Ohm Celestion G12Z-70 Zephyr speaker keeps overall weight to 12.8 kg but does not eliminate tube warmth or fan-less convection noise.

Which footswitch and speaker impedance does the combo require for channel switching and safe operation?

A two-button footswitch connects to the dedicated jack for channel and OD 1/OD 2 toggling, while the internal 16 Ohm Celestion G12Z-70 Zephyr sets the fixed load — no external cabinet matching is needed.

Will the USB audio output and XLR D.I. work with my older DAW and analogue mixer without extra converters?

The USB audio output delivers a digital stream compatible with standard class-compliant drivers on legacy DAWs, and the XLR D.I. provides a balanced line-level signal that plugs straight into any analogue mixer channel.

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