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Buzz Audio Essence (Demo Deal) – No Longer Available

True Class A optical compressor for 500 Series frames

Product Description

The essence control circuit design is based on the Buzz Audio SOC-1.1 Stereo Optical Compressor but the main audio path utilizes our BE40 and BE50 True Class A amplifiers along with high spec Lundahl input and output transformers. The input transformer is directly coupled to the Buzz proprietary Opto gain reduction element (completely passive input), amplified and then balanced via the output transformer - a very simple but gutsy signal path!

The essence control circuitry utilizes the Differential Drive Side Chain (DDSC) topology that was developed for the SOC-1.1. This system, which processes positive and negative audio waveform in separate paths, provides the incredibly musical characteristic you will hear with this unit. The DDSC design also provides for a much faster attack time compared to most other LDR based optical compressors.

Simple side chain equalizers have been provided to allow the user to adjust the sensitivity of the compressor at high and low frequencies. In addition, a side chain insert point is provided for more complex EQ and compressor "keying".

The essence consumes 2 slots within a 500 Series rack. The input/output (I/O) connectors associated with the first slot carry the main audio path. The I/O connectors associated with the second slot are used for a side chain insert point (send and return). The insert can be switched in/out of circuit and monitored via front panel switches.

PLEASE NOTE - RACK COMPATIBILITY Each Buzz Audio Essence module uses 2 rack spaces and draws 120mA +/- 15-18 volts DC, as supplied by rack power supply. Most currently manufactured rack systems will easily power a full compliment of essence units, but some older rack systems may have insufficient power, if in doubt, please check with your rack manufacturer. We recommend the API Lunchbox and VPR500 racks.

Features
  • API* 500VPR Series rack module format - plug in and play!
  • Advanced analogue technology - not a clone or copy of products from the past.
  • Powerful fully discrete hi-bias, wide bandwidth, differential Class A amplifiers.
  • Passive transformer coupled input, transformer coupled output
  • Side chain insert point
  • Side chain monitor selector
  • On board side chain EQ
  • Unique Differential Drive Side Chain design
  • May be linked to multiple essence units within one rack
  • Switchable 10 segment VU meter
NOTE: Due to some misinformation during the design of the potion and essence 500 series compressors, the card edge connection for the linking of our 500 Series compressors is incorrect.

The potion and essence have PIN 11 designated as the link connection, when in actual fact the API* standard is PIN 6. This error can be easily remedied with a simple wire link soldered between PIN 6 and PIN 11 of the potion and/or essence edge connector.

Product Specifications

Condition Demo / B-Stock
Tube or Solid State Solid State
Channels Single-Channel
Chassis Module
Module Type 500 Series
Module Slot Count 2 Slots
Digital I/O No

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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.