The Whitestone P331 Tube Loading Amplifier is a game-changing tool for audio professionals seeking nuanced harmonic enhancement. This precision-engineered device delivers subtle saturation that breathes life into audio without compromising transient clarity or bass integrity. Designed with mastering engineers in mind, the amplifier offers remarkable flexibility through its innovative gain staging and multiple transformer options.
What sets the P331 apart is its ability to add depth and realism to program material with surgical precision. Whether you’re barely touching the dial or driving the unit harder, it consistently introduces a rich, musical coloration that elevates stereo mastering. The high and low-frequency bump controls provide additional tonal shaping, making it an incredibly versatile piece of gear.
For professionals who demand subtle yet transformative audio processing, the Whitestone P331 isn’t just an amplifier—it’s a sonic paintbrush that allows you to add harmonic excitement with unprecedented control and musicality.
Justin Gray is an award-winning mix engineer, mastering engineer and producer based in Toronto, Canada. He works with artists from around the world in a wide range of musical styles, in his world-class facility equipped for stereo and immersive audio music production.
Don't miss a beat
Sign up to receive Justin Gray Sound’s email newsletter — featuring the latest educational videos, product reviews, and all things immersive audio.