Restore the Full Marshall Tone in Your DSL40

Bring your Marshall DSL40C or DSL40CR back to life with this complete OEM tube replacement set, featuring 4× ECC83 preamp tubes and 2× EL34 power tubes, all bearing the official red Marshall logo. This is the factory-correct retube kit, voiced and selected for the DSL40’s tone profile — delivering rich harmonics, tight low end, focused gain structure, and classic Marshall breakup.

This is the same tube configuration used in the DSL40 during factory production — the perfect way to restore your amp to stock spec performance or dial in the true Marshall sound.

🔧 What’s Included

⚙️ Compatibility

✔ Marshall DSL40C
✔ Marshall DSL40CR
✔ Fits other EL34-based 40-watt amplifiers using 4× ECC83 & 2× EL34

📌 Bias Information

⚠ The DSL40 requires biasing after installing the EL34 matched pair.
This amplifier uses a fixed-bias circuit, so a technician must properly set the bias after tube installation to ensure safe operation and ideal tone.

🎸 Why This Set Works

• OEM Factory Tube Set — Same configuration used in DSL40 production

• Perfect Gain Staging — ECC83s provide clean, articulate gain progression

• Authentic British Power — EL34s deliver the classic Marshall grind

• Matched & Screened — Selected for reliability and tonal consistency

• Ideal for Restorations, Repairs & Tone Upgrades

📦 Important Notes

⚠ Biasing Required – Must be set by a qualified technician
⚠ Non-Refundable – Vacuum tubes are final sale
⚠ Pre-Order Info – Email sales@britishaudio.com for availability

💡 Why Choose British Audio?

As an Authorized Marshall Service Provider, British Audio supplies only genuine OEM valves — never generics or rebrands. We maintain your amplifier’s intended tone by using real Marshall-spec tubes, tested for microphonics, gain, and reliability.

Bring your DSL40 back to full power — order your Genuine Marshall DSL40 Tube Set today!