The workshop
Seven pieces of gear a year, all models combined. See what is on the Demograf Audio bench now: units scheduled, in assembly and in measurement.
Build queue
Units currently scheduled or in assembly. Dates are estimates; each finished unit ships with its measurement report.
Each unit is numbered. When your gear enters the queue, you receive its number and a window for the measurement report.
From order to delivery
Every unit passes the same five stages; the build queue shows where each one stands now. Made by Dmitriy Gubchenko.
Specification
Circuit, tubes, chassis, finish and mains voltage are agreed in writing before the build. You receive a quotation and a place in the queue.
A place in the queue
A 50% deposit reserves the place. When the slot comes up, we tell you the start date and the number of your unit.
Assembly
Output, power and interstage transformers and chokes are wound to our specification for each circuit, the chassis is made and the circuit is wired by hand. Depending on the model this takes 6 months or longer.
Measurement and listening
The finished unit is measured — frequency response, noise floor, distortion at working levels — and listened to before shipping. Dmitriy Gubchenko approves the measurement report; you receive it, and the balance is due only then.
Delivery
Shipping and insurance are paid by the buyer and shown as a separate line in your quotation. The documents for your unit are supplied with it. Mains voltage and plug are set at order time.
What travels with each unit
- A Manufacturing Record stating the country of origin of your unit.
- A bill of materials listing the origin of key components: tubes, converters, transformers.
- A NOS tube declaration: manufacturer, country and production year of each tube.
- The measurement report of your individual unit.
After delivery
Circuit diagrams and measurement records are kept for every unit by its serial number, so any unit can be returned to specification. Every piece of gear carries a one-year warranty on materials and workmanship; after it, paid repair is available for as long as parts exist.