The Blackstar St. James 50 6L6 Combo is a Blackstar amplifier. Close alternatives include the Universal Audio Uafx Woodrow '55 Instrument Amplifier Preamp and the Electronic Audio Experiments Model feT V3.8. It pairs well with the Tone City Model B Distortion TC-T31 and the Catalinbread Formula 5F6.

Blackstar St. James 50 6L6 Combo

Blackstar · amplifier

The Blackstar St. James 50 6L6 Combo is a 50-watt all-tube guitar combo amplifier powered by 6L6 output tubes, weighing only 28 pounds — unusually light for an all-tube 50-watt design. Two channels cover a high-headroom American-voiced clean with warm, breathy low-end and a high-gain overdrive channel featuring Blackstar's most aggressive gain circuit at time of release. A voice switch on the overdrive channel reshapes midrange from full-throated vocal lead tone to a scooped rhythm voice with extra high-end extension. Power scaling switches between 50W, 2W, and a SAG mode that changes compression characteristics to respond more like a vintage amp. The St. James targets gigging players who need real tube tone without sacrificing portability.

What stands out

  • “The 6L6 clean channel delivers an American mid-scooped warmth similar to classic Fender black-panel designs with more bass weight”

    — from the community notes

  • “Power scaling to SAG mode adds vintage compression feel at low volume”

    — from the community notes

  • “The overdrive channel is the most aggressive gain circuit Blackstar offered at the time, with the voice switch reshaping from full-throated lead tones to scooped rhythm voicing with extended high-end cut”

    — from the reviews

  • “A voice switch on the overdrive channel reshapes midrange from full-throated vocal lead tone to a scooped rhythm voice with extra high-end extension”

    — from the listing

  • “and a sag mode that changes compression characteristics to respond more like a vintage amp”

    — from the listing

  • american
  • compression
  • scooped
  • lead
  • clean
  • rhythm
  • sag
  • high end

Good for

  • Live
  • Studio

Genres the Blackstar St. James 50 6L6 Combo is commonly used in

  • Metal
    citedInferred from shared tonal signals, not a stated genre tag.
  • Alternative
    citedInferred from shared tonal signals, not a stated genre tag.
  • Rock
    citedInferred from shared tonal signals, not a stated genre tag.
  • Blues
    citedInferred from shared tonal signals, not a stated genre tag.
  • Hard Rock
    citedInferred from shared tonal signals, not a stated genre tag.
  • Country
    citedInferred from shared tonal signals, not a stated genre tag.

Pedals that stack with the Blackstar St. James 50 6L6 Combo

Tone City Model B Distortion TC-T31

Tone City

27% match
$88.80via Reverb

fills a frequency gapFills in a frequency range the other side doesn't cover, instead of piling more onto what's already there. (scooped → mid-forward)

Stack Tone City Model B Distortion TC-T31 on top and a scooped tone tightens toward mid-forward

Goes in front of the amp

Catalinbread Formula 5F6

Catalinbread

26% match
$179.99via Reverb

fills a frequency gapFills in a frequency range the other side doesn't cover, instead of piling more onto what's already there. (scooped → mid-forward)

Catalinbread Formula 5F6 pushes a scooped tone toward mid-forward

Goes in front of the amp

Marshall Guv'nor

Marshall

24% match
$106via Reverb

fills a frequency gapFills in a frequency range the other side doesn't cover, instead of piling more onto what's already there. (scooped → mid-forward)

Marshall Guv'nor takes that scooped character and pushes it toward mid-forward

Goes in front of the amp

MXR Dyna Comp Mini

MXR

14% match
$109.99via Reverb

sits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.

Keep Blackstar St. James 50 6L6 Combo's compressed voice out front: MXR Dyna Comp Mini goes after Blackstar St. James 50 6L6 Combo in the signal chain so its mid-forward voice doesn't muddy it

Goes in front of the amp

Demeter Compulator

Demeter

11% match

fills a frequency gapFills in a frequency range the other side doesn't cover, instead of piling more onto what's already there. (scooped → mid-forward)

Demeter Compulator leans toward smooth, and that's a real, usable character to pair with

Goes in front of the amp

Boss RE-202 Space Echo

Boss

9% match
$238.39via Reverb

sits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.

Keep Blackstar St. James 50 6L6 Combo's compressed voice out front: Boss RE-202 Space Echo goes in Blackstar St. James 50 6L6 Combo's effects loop so its pristine voice doesn't muddy it — goes in the amp's FX loop (or last, into a clean amp)

Sits in the amp's effects loop

MXR Analog Delay

MXR

8% match

sits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.

Keep Blackstar St. James 50 6L6 Combo's compressed voice out front: MXR Analog Delay goes in Blackstar St. James 50 6L6 Combo's effects loop so its warm voice doesn't muddy it — goes in the amp's FX loop (or last, into a clean amp)

Sits in the amp's effects loop

Ibanez TS808 Tube Screamer

Ibanez

tonal match

Goes in front of the amp

Ibanez TS808 Tube Screamer is voiced for a clean amp's front end — Blackstar St. James 50 6L6 Combo gives it exactly that

Alternatives

Universal Audio Uafx Woodrow '55 Instrument Amplifier Preamp

Universal Audio

72% similarity
$420.53via Reverb

Universal Audio Uafx Woodrow '55 Instrument Amplifier Preamp recreates this amp's tone in pedal form

Electronic Audio Experiments Model feT V3.8

Electronic Audio Experiments

72% similarity

Electronic Audio Experiments Model feT V3.8 recreates this amp's tone in pedal form

Catalinbread Dreamcoat Skewer Special Edition Box

Catalinbread

72% similarity
$279.99via Reverb

Catalinbread Dreamcoat Skewer Special Edition Box recreates this amp's tone in pedal form

Tone King Imperial Preamp

Tone King

72% similarity
$571.76via Reverb

Tone King Imperial Preamp recreates this amp's tone in pedal form

Bogner Barcelona

Bogner

52% similarity

Shared character: gig, middle, warm

Blackstar S1-45

Blackstar

50% similarity
$814.95via Reverb

Shared character: aggressive playing, overdrive channel, two channels

Mesa/Boogie Stiletto Deuce Stage II

Mesa Boogie

48% similarity
$1147.50via Reverb

Shared character: sag, high gain settings, clean

Gibson GA-40

Gibson

48% similarity

Shared character: two channels, gig, warm

Vox AC-50

amplifier

48% similarity
$1265.23via Reverb

Shared character: sag, compression, bass

EVH 5150 Iconic 60W 212

Evh

48% similarity

Shared character: two channels, gig, high gain settings

EVH 5150 Iconic Series 60W 2x12 Combo

Evh

47% similarity
$1139via Reverb

Shared character: two channels, gig, aggressive playing

Carr Impala

Carr

47% similarity

Shared character: middle, aggressive playing, clean

See all alternatives to the Blackstar St. James 50 6L6 Combo (cheaper + boutique) →

Questions people ask

What are good alternatives to the Blackstar St. James 50 6L6 Combo?+

The closest matches in character are the Universal Audio Uafx Woodrow '55 Instrument Amplifier Preamp, the Electronic Audio Experiments Model feT V3.8, the Catalinbread Dreamcoat Skewer Special Edition Box.

What pairs well with the Blackstar St. James 50 6L6 Combo?+

Strong matches from rig and tone-complementarity evidence: Tone City Model B Distortion TC-T31, Catalinbread Formula 5F6, Marshall Guv'nor — Stack Tone City Model B Distortion TC-T31 on top and a scooped tone tightens toward mid-forward.

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