Integrated amplifiers — Audio Note SORO Line PP

The SORO Line PP is a push-pull tube integrated amplifier from Audio Note, built with considerably greater output power than much of the brand's single-ended lineup. The SORO Line PP brings Audio Note's considered engineering to a more powerful tube integrated format.

Key specs that matter

Four single-ended inputs are provided. Input sensitivity is 300mV, with input impedance at a substantial 100,000 ohms. Output power is 20W into both 8 and 4 ohms - considerably more than the single-ended OTO SE 35's 8W, reflecting the push-pull topology referenced in the model name. At 140 x 440 x 410mm and 16kg, the SORO Line PP shares the OTO SE 35's compact chassis while offering considerably greater output power.

Sound and use context

Expect a dynamic, capable character reflecting the push-pull topology's greater power delivery than typical single-ended designs, while retaining Audio Note's characteristic warm, musically engaging tonal signature.

Pairing

The 20W output suits a somewhat wider range of loudspeaker sensitivities than Audio Note's more modest single-ended designs.

Alternatives

Audio Note's own OTO SE 35 offers a single-ended alternative with a built-in phono input within the same broader catalogue.