Graaf GM20 OTL Tube Power Amplifier – Legendary Italian Engineering & Pure Class-A Sound
RM7900.00
Graaf GM20 OTL Tube Power Amplifier – Legendary Italian Engineering & Pure Class-A Sound
Up for sale is the Graaf GM20, a highly sought-after OTL (Output Transformer-Less) tube power amplifier made in Italy. This amplifier has achieved cult status among audiophiles for its stunning transparency, lightning-fast transient response, and holographic soundstage.
The GM20 uses four 6C33c tubes per channel, operating in pure Class-A without output transformers — delivering a highly refined, natural, and dynamic sound that rivals far more expensive gear. The OTL design ensures unmatched clarity and immediacy, especially in the midrange.
This is not just an amplifier — it’s a musical instrument designed to reveal the soul of the recording.
Reviews & Reputation:
The GM20 has been praised by reviewers and owners alike for its:
Liquid midrange and pinpoint imaging Lightning-fast dynamics
Absence of transformer coloration
Italian build quality and beautiful industrial design
If you're looking for a truly transparent, musical, and rare amplifier, the Graaf GM20 is a collector’s dream and a sonic masterpiece.
Specifications:
Design: Pure Class-A, OTL (Output Transformer-Less) tube amplifier
Power Output: 20W per channel into 8 ohms
Input Impedance: 50k ohms
Frequency Response: 1Hz – 350kHz
Tubes: 4x 6C33c, 2x ECC82 (6922), 4x EF184
Dimensions: 440mm (D) x 350mm (W) x 215mm (H)
Weight: 22 kg
Speaker Compatibility: Best with high-sensitivity speakers (90dB+), ideal for 8-ohm nominal impedance
Condition: In excellent condition.
Includes original packaging, user manual and matched tubes
Cosmetic: no dents or damages
Functional: 100% working order, recently checked by qualified technician
💰 Credit card payment accepted
📌 Swap / trade-ins may be considered
