Suhr’s SL15 expands its legendary SL series of guitar amplifiers into more compact and decibel-friendly environments. Make no mistake, this 15-watt, 6V6-powered junior behemoth unleashes classic British-style gain but without the overtaxed eardrums, making it an ideal companion for studio work or at-home playing.
All the controls you know and love from the SL67 and SL68 are here, from the traditional EQ controls, the three tone-shaping switches, and the super transparent Master volume, allowing you to unleash the SH15’s sonic fury at any volume without losing intensity. Moreover, there’s no need to use jumper cables — the SL15 is prewired to use both the bright and normal inputs as you require. Now, with the Suhr SL15 in two, you can conjure tried-and-true Plexi-style vibes in any musical setting.
NO NEED TO JUMP CHANNELS
The SL15’s single-input circuit keeps both channels blendable at all times, giving you effortless control over your tone. And when a channel’s volume is all the way down, it’s completely out of the circuit, preserving clarity and responsiveness. Classic British crunch meets modern flexibility, all in a compact, powerhouse amp.
PLENTY OF SWITCHING OPTIONS
FAT-CAP SWITCH: One of the only tweaks found on a very famous amp John worked on in the 90’s, the Fat-Cap, adding low-end punch and bass that’s perfect when using the ‘Treble’ channel. In the original SL series, the ‘Fat’ cap was always in the circuit. This switch allows you to remove the Fat-Cap to get closer to a ‘true’, stock vintage amp.
MID-BOOST SWITCH: Dial in the perfect amount of midrange punch to cut through the mix. The Mid-Boost give a bit more gain to the phase inverter and a subtle lift to the tonestack, boosting the gain to the mid range. Most usefull when dimeing the controls.
3-WAY BRIGHT SWITCH: Add brilliance and sparkle to your tone, with clarity and presence. This switch allows you to choose between 3 different values, ‘Off’ is the original SL series, all-the-way bright which is the stock value found in vintage amps and a middle position that is somewhere in between.
MASTER VOLUME CONTROL
No more relying on external attenuators—our advanced Master Volume circuit puts total control at your fingertips. Designed for ultimate transparency, it maintains your amp’s natural character at any volume, whether you’re dialing in tones for late-night practice or unleashing full power on stage. When set to 10, the circuit is completely bypassed, ensuring uncolored, unrestrained tone. As you turn it down, the volume gradually reduces to whisper levels while keeping the dynamics and feel of your playing intact.
6V6 POWER TUBE SECTION
The SL15’s 6V6 power section is finely tuned to deliver the same rich harmonic complexity and dynamic feel as its larger siblings—just at a more manageable 15W. Designed for balance and headroom, it retains the punch, clarity, and response of a full-sized amp while allowing for more natural breakup at lower volumes. Whether you’re chasing glassy cleans or saturated overdrive, the SL15 captures the essence of big, roaring British tone in a compact, gig-ready package.
MAIN FEATURES
- 15W single-channel tube amplifier offers expansive British-style tones in a lighter, volume-conscious format
- 2 x 6V6 power tubes and 3 x 12AX7 preamp tubes deliver vintage sweetness at lower power
- Single input is prewired to use both Bright and Normal volume controls
- 3 switches give rise to some of John Suhr's most famous amplifier tweaks
- Super-transparent Master volume control tames the decibel level in the room without compromising tube-driven tone
- Built in Lake Elsinore, CA