P DI Series - Transformer Passive DI BOXES

A DESIGN THAT HAS BEEN 15 YEARS IN THE MAKING

While passive DI boxes are often seen as dongles or adapters, we prefer to see them as a storefront display window: your goods might be the best available but you need a glass that is clean, transparent and unscratched so your products can shine and be appreciated. The less you notice it, the better. That is why we’ve decided to create our own D.I. boxes based on 15 years of R&D, tests, failures and successes.

It would have been impossible to deliver the superior clean passive design of the P DI ONE and P DI 2 if we hadn’t already mastered transparent passive signal handling with our R.A.M monitor controller series, specifically with the Baby R.A.M, the undefeated category leader for almost a decade now.

Transformers are the main ingredient on a high level passive D.I. and the only way to master the transformer world is pure experience. We’ve spent the last 15 years designing custom-made transformers with almost every reputable manufacturer in the world, thoroughly measuring different alloys to perfectly adjust the response to what each particular design requires and finally, we found the best one for the job, the HA-DI. It has the ideal combination of a nickel core for an ultra transparent signal transfer and MU Metal shielding for protection against any unwanted noise or interference caused by outside sources.

THE BEST THING ABOUT A PASSIVE D.I. IS FORGETTING THAT IT´S EVEN THERE

The P DI ONE and P DI 2 work best with active circuit instruments like keyboards, synths, drum machines, samplers and some guitars and basses, when they are required to be plugged into a PA or recording system. By matching the instrument’s output level to a typical microphone level, converting it to a balanced signal and minimising noise, you can be sure you’ll achieve the strongest, clearest signal possible.

DELIVERING THE NATURAL, CLEAR TONE OF YOUR INSTRUMENT, WITH NO ARTIFACTS ADDED.

Thanks to its passive, power-free design, the P DI ONE and P DI 2 converts the impedance from high to low and balances the signal using a magnetic transformer that transfers audio while blocking unwanted DC voltage and RFI. This makes it especially effective at eliminating hum and buzz from ground loops while maintaining the tone of your instrument at every stage.

And as with all Heritage Audio products, you can be rest assured that you are getting a sturdily built, ultra durable product at a price that is right.

P DI ONE Features

• Single channel passive DI box
• Effectively eliminates hum and buzz caused by ground loops
• Delivers virtually zero phase shift or harmonic distortion
• Outstanding signal integrity and superior noise rejection
• HA-DI custom made transformer with nickel core to ensure optimal signal transfer while protected by MU METAL shielding against any EMI
• Rugged 14-gauge steel enclosure prevents PCB stress and potential component failure
• MIL-spec circuit board with full ground plane for ultra-quiet operation
• Durable metal switches rated for over 25,000 cycles
• 15dB pad
• Frequency response: 20Hz - 18kHz
• Ground lift switch
• Input / Thru gold-plated jacks
• Gold-plated XLR output

P DI 2 Features

• Dual channel passive DI box
• Effectively eliminates hum and buzz caused by ground loops
• Delivers virtually zero phase shift or harmonic distortion
• Outstanding signal integrity and superior noise rejection
• HA-DI custom made transformers with nickel core to ensure optimal signal transfer while protected by MU METAL shielding against any EMI
• Rugged 14-gauge steel enclosure prevents PCB stress and potential component failure
• MIL-spec circuit board with full ground plane for ultra-quiet operation
• Durable metal switches rated for over 25,000 cycles
• 15dB pad
• Frequency response: 20Hz - 18kHz
• Ground lift switch
• Input / Thru gold-plated jacks
• Gold-plated XLR output