Ampex Passive Audio Transformer Color Box

This is not just another piece of gear—it’s a rare, boutique audio transformer unit built around vintage AMPEX transformers, the same type trusted in classic studio gear that defined the sound of entire eras of recorded music.

Designed with precision and housed in a passive format, this box delivers a unique and highly sought-after sonic character to your mix. It enhances your audio in ways no plug-in can replicate.

When you run your signal through these AMPEX iron cores, you’ll notice:

• Added harmonic richness

• Improved spatial separation & depth

• Analog glue that pulls the mix together

Whether on vocals, drums, synths, guitars, or your full stereo mix bus, this unit adds that classic analog magic engineers chase after.

With its 1:1 winding ratio and fully balanced design, it doesn’t just pass signal—it colors it with detail, warmth, and harmonic complexity only vintage transformers can provide. The mu-metal shielding and electrostatic shield ensure that what you’re getting is pure, noise-free transformer tone.

This is the kind of gear that becomes a secret weapon in the studio—subtle when you want it, bold when you push it. And with original AMPEX transformers inside, these units are getting harder and harder to find. Once they’re gone, they’re gone.

Features / Specifications:

• Stereo I/O – Left & Right Channels

• Fully Balanced – Tip, Ring, Sleeve

• Frequency Response – 20 Hz – 20 kHz

• Winding Ratio – 1:1

• Impedance – 600:600K Ohms

• Distortion – <0.2% @ 30Hz

• Mu-Metal Shielding

• Electrostatic Shield

📦 Handling Time: 5–7 Days