Selmer Treble 'N' Bass 50 SV

5.0 (1)

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This product is Vintage or Discontinued

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Page last updated Aug 10, 2025

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Description

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Step back into the golden age of British rock with the Selmer Treble 'N' Bass 50 SV, a vintage-inspired amplifier head that captures the essence of the classic British sound. This amplifier head is a nod to the original models from the 1960s, cherished for their warm, rich tones and dynamic range. Designed for the discerning musician, the Treble 'N' Bass 50 SV offers a seamless blend of vintage aesthetics and modern reliability.

Equipped with 50 watts of power, this amplifier head is ideal for both studio sessions and live performances, delivering a robust sound that can fill any space. The all-tube design ensures a smooth and responsive output, providing the tonal clarity and harmonic richness that guitarists crave. With its dual-channel operation, you can effortlessly switch between clean and overdrive tones, offering versatility for a wide array of musical styles.

The Treble 'N' Bass 50 SV features a simple yet effective control layout, allowing for precise adjustments to your sound. The treble and bass controls provide a wide range of tonal possibilities, while the presence control adds an extra layer of brightness to your signal. Ruggedly built to withstand the rigors of touring, this amp head combines durability with timeless style, making it a staple in any guitarist's rig.

Key Features:

50 watts of power output
All-tube design for authentic vintage sound
Dual-channel operation for clean and overdrive tones
Simple control layout with treble, bass, and presence adjustments
Vintage-inspired design with modern reliability

Product specs

Amp Type

tube

Videos

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Vintage Guitar Amp Repairs & Online Guitar Teacher

Vintage Selmer Treble & Bass 50SV Restoration and Demo

Vintage Guitar Amp Repairs & Online Guitar Teacher

Selmer Treble & Bass SV 50 with Reverb and the Longest Power Cable in the World (Probably)

Vintage Guitar Amp Repairs & Online Guitar Teacher

Reviews

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Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Selmer Treble 'N' Bass 50 SV.

Features and functionality

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The Treble 'N' Bass 50 SV can produce abundant top-end frequencies that are non-offensive, delivering a unique tonal clarity.
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The amp’s bass channel alone provides a robust, full-bodied sound with high-end bite, especially when treble is minimized and bass is maximized.
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Use cases and applications

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Owners successfully use the amp for both guitar and bass, achieving a clear fundamental tone even on a low B string with modern high headroom cabs like the Mesa Boogie Lonestar 2x12.
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When plugged directly into the bass channel, the amp delivers significantly higher volume and a fuller sound compared to jumping channels.
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Comparisons

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The Selmer Treble 'N' Bass 50 SV is likened to a Plexi but with its own distinct voice, described as snappy, direct, and capable of very high volumes.
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The 70s silverfaced versions are commonly found in the UK and are priced lower than the 60s models, which are increasing in value.
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Setup and maintenance

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The amp's old-school point-to-point wiring makes it easy to service, though replacing original caps and tubes might be necessary for optimal performance.
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Jumping the channels might cause phase issues, potentially affecting sound quality. Owners are advised to consult schematics or technicians to investigate this further.
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Value and pricing

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The Mk 4/S.V. version, with its aluminum front, is the least expensive model, priced between $800 - $1200 but retains identical circuitry to more expensive models.
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Other

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European models require a step-up transformer for use in North America, and quality transformers significantly improve the amp's performance and tone.
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User experience

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Owners report that after a proper service, the amp delivers significantly more power and clarity, suggesting maintenance is crucial for optimal performance.
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5.0 out of 5

Based on 1 Review and 1 Rating

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manu_zitnik

110

almost 7 years ago

Another forgotten oldie but goodie

Selmer may be celebrated for its saxophones (they used to make the "holy grail" of all saxes, the Selmer Mark VI), but they made great amps too. The Treble & Bass 50SV model that I have is from the early 70s, PTP construction, built in England with great components and tidy solder work. It is the last version of that model. Granted, it's ugly! But if you're familiar with the awesome crunch of a JTM45, this amp will please you to no end. It's got its own flavor going on, but you can get a very close rendering of the tones on AC/DC's first albums (High Voltage, Let There Be Rock). The crunchy tones you can get from this amp are simply out of this world. The Bass channel is super bassy and the Treble channel is super trebly, which is a common complaint. Thus, most people bridge them together. I just use it with the bass channel, plugged into a very trebly cabinet to balance things out. I love it. Please try one if you can, you'll be surprised this is not more famous than it is.

I forgot to add the amp has a built-in effects loop, stock!

jimmarchi1

41029

7 years ago almost 7 years ago

my best friend has one of these... compared to previous versions the innards are really strangely laid out.... very annoying to service

manu_zitnik

110

7 years ago almost 7 years ago

That's true, for instance you have to take down the front plate with all the controls in order to have access to the filter caps and replace them.

Artist usage

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Freddie Cowan

Guitarist

The Vaccines

Verified via YouTube

The head can be seen during the "Live Session" / "Live Performance Video" for the songs 'Put It On A T-Shirt' and 'Nightclub' for the 2018 album 'Combat Sports'. https://www.youtube.com/watch?v=m4M7ydmvTzg - Put It On A T-Shirt https://www.youtube.com/watch?v=9lpr7PPZcVs - Nightclub

Slaves

Verified via YouTube

Seen being used in YouTube video at 7:20

Louis Borlase

Guitarist

Squid

Verified via YouTube

In the video titled "Squid - Undergrowth + GSK Live at AB - Ancienne Belgique" by AB - Ancienne Belgique on YouTube, Louis Borlase can be seen using the Selmer Treble 'N' Bass 50 SV amplifier head with what it looks like a Marshall MR1936 2x12 cab at the 0:35 mark.