S40-5881 Combo

Vintage Tweed Grit. Modern Power. Hand-Wired Character.

The S40 – 5881 is Marla Amplification’s powerful take on the beloved low-watt Tweed amps of the 1950s—built not just to emulate the past, but to push it forward. Don’t let the name fool you—this amp is loud, raw, and unapologetically expressive.

While its layout mirrors the S20V, the S40 uses a pair of 5881 power tubes to deliver a tighter, punchier, and more articulate version of that 5E3-5F6A style growling overdrive. The result is a tone that retains the creamy breakup and rich midrange of classic Tweed designs, but with enhanced clarity, headroom, and responsiveness.

Key Features:

• Output Power: ~40 watts (clean), with natural breakup that kicks in beautifully at stage volume

• Power Tubes: 2x 5881 (mil-spec 6L6 variant)

• Preamp Tubes: 2x 12AX7

• Rectifier: GZ34 for dynamic sag and classic feel

• Channels: 2 fully independent channels (Channel A and B)

• Inputs: High and Low sensitivity inputs for each channel

• Jumping Capable: Use a jumper cable or ABY switch to blend both channels for rich overdrive and tonal complexity

• Tone Character:

• Channel A: Fat and focused with a strong mid-push—perfect for driven rhythm and bluesy leads

• Channel B: Brighter and slightly more open—ideal for edge-of-breakup cleans or jangly rhythm

• Cabinet: Finger-jointed pine for natural resonance and vintage mojo

• Speaker (standard): 1x12" ceramic speaker chosen for punch and headroom (custom options available)

• Controls (per channel): Boost, Volume, Tone (Bright Switch for CH1)

• Dimensions: Approx. 22" W x 20" H x 10.5" D

• Weight: ~38–42 lbs

• Finish Options: Hand-applied finishes upon request

• Hand-wired in the USA using turret board construction and top-shelf components