DOD Phasor 490 Phase shifter

[steste]

Hi, im using a rhodes stage through a preamp into a hi-fi home stereo and im evaluating an offer for a DOD phasor 490 vintage phase shifter to have more flavour and movement to the sound.
Price is 100 euro.
What do you think?

[gacki]

I haven't used one of those myself so I can't say if there is anything special about the sound.
A quick glance at the schematic shows it to be a 4 stage phaser. The elements used for the phase shift are OTA's.
I think there had been comparatively few phaser designs using OTA's; Nobels did one, I believe the MoogerFooger phaser is also using those.

[The Real MC]

Phasors that used OTAs for the phase shifting network:
Mutron Phasor II (not BiPhase)
Oberheim Phaser
Moog rack mount 12-stage phaser
Moogerfooger MF-103 6/12 stage phaser
many more...

...those are actually more common than opto-based phasers.

[Jenzz]

Just to correct this:

Mutron Phasor (1) uses OTAs
Mutron Phasor II uses LDRs / LED


Jenzz

[gacki]

...those are actually more common than opto-based phasers.

AFAIK the FET based phasers are the most common ones; that's what I wanted to say.

Also, afaik the Oberheim Phaser/Phasor isn't OTA based.