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SKU

50684

Please note: this item is available for purchase in the United States only.

API 535-LA 500 Series Line Amplifier

Boost or attenuate line-level signals with API's signature warm, punchy sound
MFR# 535-LA

Product Description

After many years of requests for an API line amp, API Audio is announcing that the API 535-LA Line Amplifier is the newest addition to the 500 Series collection.

Modeled after API's highly prized console-based 325 booster cards, the 535 can both amplify and attenuate incoming and outgoing signals for ultimate flexibility, all while providing API's trademark API warmth and tone. The 535 is useful anywhere signal levels need adjusting such as inputs from keyboards, audio playback devices, or from mic preamps or audio processing devices that do not have their own level control. The 535 excels at adding warmth to digital signals such as DAW outputs, and features an LED clip indicator. The 535-LA also includes a balanced input, a polarity switch, a 20db pad for incoming signal attenuation and a 3-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 535 utilizes 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.

Product Specifications

Condition New
Tube or Solid State Solid State
Channels Single-Channel
Chassis Module
Module Type 500 Series
Module Slot Count 1 Slot
Direct Input No
Digital I/O No

Product Reviews

5 out of 5 stars.
Review Count (1)

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I wanted to be able to add the ‘API sound’ to my productions & mixes. So Dave Fisk@vintage king & his API rep said the best way to do that was this little beast right here. So I got two of them (for stereo sources) and I freakin love ‘em. They have the API legacy transformers in them. I ran a vocal thru one of ‘em, engaged the pad button and pushed the signal hard and it kinda set the vocal on fire! It gave it a kinda electricity.. just made the vocal ‘hairy’ you know. So much character. The 535 actually helped to cleanup muddy frequencies in the vocal and it brightened it up & just put it right there in your face. Vocal sat in the mix perfectly after that without pushing the volume too much. My two 535’s are two pieces of gear I will NEVER part with!

By Michael M on January 8, 2023

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How do you rate this product?
I would like to thank VK for the wonderful sales assistance, service and prices. This was my first purchase with you and it won't be my last. I only wish I'd discovered you years ago!
Matthew R.
I had two Grammy wins this year - Ray LaMontagne & Carolina Chocolate Drops. Both made with help from Vintage King!
Ryan F.
In almost 20 years in Pro audio buying, never did I receive a unit so well packed and exactly as described. Works flawlessly. The whole process has been so smooth. I will never hesitate to do business with you guys in the future and will recommend you to everyone I know.
Martin C.
This was my first experience buying something from Vintage King (although I surf the "used" categories on the website frequently!), and, despite being on the other side of the world, I had absolutely no trouble and everything went very smoothly.
Phil T.
The speed of delivery exceeded my expectations! I was VERY pleased that my shipment arrived in time for a scheduled vocal tracking session. The packing insured that my order arrived safely. And the sales staff responded quickly to questions regarding the product.
James P.
Thank you so much! Vintage King has been so fair and easy to work with. I can't thank you enough. It feels good to trust such a hefty purchase to folks who are so helpful and knowledgeable. Vintage King is a sound designers dream store.
Noa L.
You guys have excellent customer service and I am excited about the next upgrade I complete on my fifth recording facility. I've been in the studio business for forty plus years. The salesman I worked with at Vintage King was the best of the best. You all rock!
Robby T.
I would recommend Vintage King to any one looking for top-class gear, unbeatable customer service and the best prices on the map!
Jake D.
My experience with Vintage King was excellent. The order was here fast considering it was out of stock. The sales person had SKB send it to me directly and I couldn't have been more pleased.
Michael D.
From the minute I placed my order I was kept well-informed through each step in your process. Even though I was buying a comparatively modest piece of gear, your attention to detail made me feel like I was purchasing a six-figure mixing desk.
Thomas W.
I am a new customer of yours. You guys provided me the absolute best deals in ordering all the equipment to power my brand new recording studio. Your customer service is amazing and i will always deal with you from here on out.
Rob M.
Thanks for your great service and getting this out today. You guys really are the Kings!
Alan B.
Better than expected! Truly impeccable service. Your team was professional, knowledgeable, provided speedy delivery above and beyond standard. Vintage King Audio is definitely my go to for all of my audio and information needs.
James O.