Hartman Envelope Filter – AUCTION IS CLOSED

Attention guitar players!

Theo Hartman has donated three units of his excellent envelope filter, developed in consultation with Mark Karan (Ratdog, Jemimah Puddleduck). UPDATE: Mark Karan will autograph these units for the winning bidders!

From the product information press release:

Inspired by one of the great envelope filter pedals of the 1970’s and developed with guitarist Mark Karan (Delaney Bramlett, Bob Weir & Ratdog, Jemimah Puddleduck) the Hartman Envelope Filter is a recreation of a classic effect optimized for tone, flexibility, and ease-of-use….

“Mark wanted a pedal with a certain tone, range, and feel that he could switch fluidly among its settings via a simple user interface, and of course, analog.” says Hartman. “I was intrigued by the idea of tailoring a faithful recreation of the old Mutron to his requirements, so we set to work. The result is a beautifully voiced, touch-sensitive musical effect that preserves the raw immediacy of first-generation analog.”

The Hartman Envelope Filter employs select, low-noise components and an optically controlled state-variable filter for authentic timbre and response. A second footswitch permits change of filter sweep direction for on-the-fly access to a broad palette of classic filter sounds from funky chirps and saturated quacks to subtler flute-like attacks and horn-tones. An active Mix control blends filtered and unfiltered signal. Factory preset internal trim pots permit additional tuning of filter voice and action.

The street price of the Hartman envelope filter is $239.



7 Responses to “Hartman Envelope Filter – AUCTION IS CLOSED”

  1. John Bedell says:

    I’ll start the bidding at $100.00

  2. Jedhead says:

    I’ll bid $200 on one of them.

  3. Jim Francis says:


Leave a Reply