Sonographe SD-22 CD player Specifications

Sidebar 1: Specifications

Description: Frequency response: 5Hz–19kHz ±0.5dB. Output level: 640mV RMS. S/N ratio: 90dB relative to 640mV output level.
Dimensions: 11.25" (288mm) D by 17.125" (435mm) W by 3.75" (95mm) H. Weight: 12 lbs (5.5kg).
Price: $895 (1992); no longer available (2017). Approximate number of dealers: 100.
Manufacturer: Conrad-Johnson Design Inc., 2800R Dorr Avenue, Fairfax, VA 22031. Tel: (703) 698-8581. Fax: (703) 560-5360. Web:

Conrad-Johnson Design Inc.
2800R Dorr Avenue
Fairfax, VA 22031
(703) 698-8581

hollowman's picture

I was just looking at the print issue this review was in (Feb 1992).
The Sonograph was one of several CDPs CG and TNJ reviewed in a "shootout" of mid-priced players.
The Sonograph review above makes much more sense in the CONTEXT of ALL the reviewed units.
One important point being that the Sonograph was worst-measuring of the set.
Another important aspect was that each of the CDPs utilized different DAC and DF topologies (Bitstream, multibit, various oversampling rates, etc.).

So ... JA (or to whom it may concern): please publish rest of review! Thx!

hollowman's picture

BTW ... I noticed that Stereophile used to publish squarewave in its Measurements (as in this 1992 review) .
I haven't seen them in over two decades (??). When and why did Stereophile quit this practice?

watchdog005's picture

This CD player is like owning a $20,000 turntable cartridge combo. Sweet sounding analog without a trace of digital harshness. It's rare and it's a keeper. Audio CD's sound better on this unit then they do on an expensive unit that plays SACD's so it makes a great addition to your system even if you own a modern SACD or DVD audio system. These are well built and hard to find so grab it if you can find one.