Power amplifiers mono — Trafomatic Audio Glenn

The Glenn is a tube-informed monoblock power amplifier from Trafomatic Audio, sitting below the Elysium with a minimal power output typical of single-ended-triode design. The Glenn brings Trafomatic's most storied engineering heritage to dedicated monoblock power amplification.

Key specs that matter

Input sensitivity is 3,000mV, with input impedance at 47,000 ohms on both connections. Output power is a minimal 12W into 8 ohms, rising to 26W into 4 ohms - a classic single-ended-triode figure. Frequency response spans a wide 8Hz to 60,000Hz within plus-or-minus 3dB. Signal-to-noise ratio is 90dB, with total harmonic distortion plus noise at 4% at 100% global feedback - a specification approach typical of single-ended-triode designs prioritising harmonic character over low distortion. At 480 x 340 x 270mm and 26kg, the Glenn's considerable weight for its minimal power output reflects serious internal transformer engineering.

Sound and use context

Expect the exceptionally rich, harmonically resonant character single-ended-triode amplification is broadly celebrated for among tube enthusiasts, with the minimal power output requiring high-efficiency loudspeakers.

Pairing

The minimal 12W-26W power output requires high-efficiency loudspeakers, typically horn-loaded or high-sensitivity designs.

Alternatives

Trafomatic's own Pandora offers a somewhat more powerful monoblock alternative within the same broader catalogue.