Integrated amplifiers — Line Magnetic AS-128 212

The AS-128 212 is a massive tube mono integrated amplifier from Line Magnetic, built around the substantial 212 output tube with extraordinary chassis mass. The AS-128 212 brings Line Magnetic's most ambitious current tube engineering to a dedicated monoblock format.

Key specs that matter

One balanced XLR input and four single-ended RCA inputs are provided. Input sensitivity is 500mV, with input impedance at 100k ohms balanced or 600 ohms single-ended. Output power is 30W. Gain offers a switchable 40dB or 52dB setting. Signal-to-noise ratio is 88dB. At a substantial 490 x 400 x 600mm and 70kg, the AS-128 212 represents one of the most massive tube integrated amplifiers within Line Magnetic's catalogue, reflecting the considerable physical size of the 212 output tube and its associated transformer requirements.

Sound and use context

Expect the rich, harmonically saturated tonal character 212-tube-based amplifier designs are broadly prized for, with the considerable 70kg mass reflecting serious output transformer and power-supply componentry.

Pairing

The comprehensive five-input connectivity comfortably accommodates a source-rich system, and the modest 30W output pairs best with efficient, high-sensitivity loudspeakers.

Alternatives

Line Magnetic's own AS-125N and AS-125PP 211 offer alternatives at more moderate chassis mass within the same broader tube-amplifier catalogue.