API 535-LA Line Amplifier

Modeled after API's highly prized console-based 325 booster cards, the API 535-LA can both amplify and attenuate incoming and outgoing signals for ultimate flexibility—all while providing API's trademark warmth and tone.

2019

API 535-LA Line Amplifier Details

The API 535-LA excels at adding warmth to a variety of signals. Recommended uses include:

  • Warm up digital signals of all kinds
  • Add Tone to Keyboard rigs
  • Add warmth to any mix

 

Audio playback devices, mic preamps, or audio processing devices that do not have their own level control will also benefit from the added tone and control of the API 535-LA.

The API 535-LA also includes a balanced input, a polarity switch, a 20dB pad for incoming signal attenuation and a three-position toggle switch, which allows for different output gain levels from the transformer. This is designed to drive long balanced lines with low distortion just as the 325-booster card does. Output gain range is from 6dB to 45dB.

The API 535-LA utilises the discrete 2510 and 2520 Op-Amps along with API’s proprietary transformers to create the unique, warm and reliable sound that API users expect. Like all API products, the API 535-LA features API’s unique 5-year warranty.

Features

  • Continuously variable detented input level trim
  • Polarity button
  • 20dB Input Pad
  • Calibrated Level mode
  • Output Ratio selector
  • Clip LED indicator
  • Continuously variable Output Gain
  • Traditional API fully discrete circuit design
  • Audio circuit uses the famous 2510 and 2520 Op-Amps
  • Traditional API fully discrete circuit design

Specifications

  • Frequency Response: -0, +0.2, 30Hz-20kHz
  • THD+N: .006% at factory CAL Level setting (+4dBu)
  • Noise floor: -85dBu at factory CAL Level setting
  • Gain Range: -inf. to 53dB
  • Maximum Input level: +32 dBu, balanced (with PAD)
  • Maximum Output level: +32 dBu MAX, balanced (1kHz)
  • Input Impedance: Greater than 20,000 ohms, ~4,000 ohms w/ pad
  • Output Impedance: Less than 75 ohms

TRY OUR ‘MY EFFECTS RACK’ FEATURE TO TRACK WHAT YOU HAVE IN YOUR EFFECTS RACK NOW, AND THOSE ITEMS YOU WISH TO ADD.

The details provided above are drawn from historical documents like advertising brochures or user manuals. They’re shared without bias or review. This info is given solely for your consideration, helping you gauge its usefulness to you.

User Reviews

There are currently no reviews, why not be the first?

Used it? Leave your rating and review.

Audio Samples

There are no samples available at the moment. If you can help, please contact us.

Alternatives

Currently no information available…

Plugin Alternatives

Currently no information available…

Classic Tracks

Currently no information available…
The absence of information doesn’t necessarily mean it hasn’t been used on classic tracks or albums; it just means we don’t have the details.

Famous Racks

No results found.

Related Articles

No results found.

Leave a Reply

Just a Quick

Question?

Can you tell us quickly what it is you love about Vintage Digital, and what it is you would like to see more of on the site? Is there anything you think we should add?
Let us know!