Endymion
from $36,200 Made to order
Request a build slot Deposit, lead time and warrantyAll units in the photos are real. Some photos are AI-enhanced to improve image quality.
Sound
A wide, deep stage
Linear and transparent rather than vintage-coloured: speed, high resolution and a bass with real authority.
Loudspeakers and headphones
One chassis for any load
It drives sensitive loudspeakers and demanding planar magnetic headphones from the same chassis. A push-pull version doubles the output power for difficult loads.
Two chassis
A quiet supply for a quiet circuit
The external power supply carries kenotrons, galvanic isolation, choke filters and custom-wound power transformers, so the audio circuit stays quiet even on a contaminated mains grid.
Made to order
Built by hand, one at a time
Selected and matched triodes, custom-wound transformers and chokes. Each Endymion is built by hand to order and numbered on its nameplate.
Endymion
Numbered unit — Opus No. on the nameplate
- Model
- Pure Class A single-ended amplifier on 845, 211 or 805 triodes, 15–25 W
- In brief
- One of three high-power transmitting triodes, single-ended in pure Class A, on two chassis built by hand.
- Queue deposit
- 50% · from $18,100
- Lead time
- Seven pieces of gear a year, each built by hand to order. Current lead time: six months or more.
- Push-pull (PP)
- The stock build is single-ended. A push-pull version is built to order for +50% of the price. Push-pull from $54,300 Request a push-pull build
- Origin
- Made in Kazakhstan by Dmitriy Gubchenko
- Warranty
- 1 year (extra warranty available: +1 or +2 years)
Part of the Dominion collection
- Music it suits
- Endymion is not tied to a genre: it suits any music, from chamber recordings to large orchestral and rock productions, thanks to its power reserve and low-impedance drive.
From the atelier
Endymion is a pure Class A integrated amplifier built around one of three high-power transmitting triodes — 845 (20 W), 211 (15 W) or 805 (25 W) per channel into 8 Ω, single-ended. A push-pull version doubles the output power for difficult loads.
The presentation is linear and transparent rather than vintage-coloured: a wide, deep stage, speed, high resolution and a bass with real authority. It drives sensitive loudspeakers and demanding planar magnetic headphones from the same chassis, and a ground-lift switch on the panel deals with ground loops in larger systems.
We state the power the amplifier delivers in pure Class A at the stated distortion; the figure comes from the unit’s own measurement report.
All tube amplifiers are built as two-chassis designs by definition, with a galvanic-isolation transformer and a ground-lift switch.
The amplifier is built on two chassis. The external power supply carries four 6D22S kenotrons, galvanic isolation, choke filters and custom-wound power transformers, so the audio circuit stays quiet even on a contaminated mains grid.
- Output: 2 × 845 triodes (211 or 805 to order), selected and matched
- Input: 2 × AL4 (EF55 to order)
- Rectification: 4 × 6D22S kenotrons (2 × 5C3S to order)
- Volume: ALPS potentiometer (stepped attenuator to order)
- Internal wiring: Proprietary “RareCoreFusion” Alloy
| Component | Manufacturer | Country of origin |
|---|---|---|
| Output tubes 845 (211 / 805 to order) | Selected, matched pairs | US / EU / UK (NOS) / Other Vintage |
| Input tubes AL4 (EF55 to order) | Vintage, selected | US / EU / UK (NOS) / Other Vintage |
| Rectifier tubes 6D22S | NOS, selected | US / EU / UK (NOS) / Other Vintage |
| Power and output transformers, chokes | Demograf Audio (custom-wound) | or analog by Hashimoto / Tango / Tamura |
| Volume potentiometer | ALPS | Japan |
| Internal wiring: Proprietary “RareCoreFusion” Alloy | Demograf Audio | Own manufacture |
Photo {n} of {total}
Simplified diagram of the stock configuration. The exact circuit for your options is confirmed with the atelier.
When delivering to countries that have imposed sanctions, we do not install sanctioned components; we fit vintage and modern equivalents instead.
Specification
Download the brochure PDF · EN · 0.6 MB
Measured on the stock configuration; options may change the figures.
- Use
- Universal: loudspeakers and headphones
- Amplifier class
- Pure Class A
- Output power — 845
- 20 W per channel at 8 Ω, single-ended (push-pull option: ×2)
- Output power — 211
- 15 W per channel at 8 Ω, single-ended (push-pull option: ×2)
- Output power — 805
- 25 W per channel at 8 Ω, single-ended (push-pull option: ×2)
- Load impedance
- 8 Ω (4 Ω / 16 Ω winding available on request)
- Channels
- 2 (stereo)
- Output tubes
- 2 × 845 (211 / 805 optionally)
- Input tubes
- 2 × AL4 (EF55 optionally)
- Rectifier tubes
- 4 × 6D22S (2 × 5C3S optionally)
- Volume control
- ALPS potentiometer (optionally: Demograf Audio stepped attenuator)
- Input connections
- Analogue RCA (optional: balanced XLR)
- Headphone outputs
- 6.3 mm TRS, XLR 4-pin (optionally: 2.5 mm, 3.5 mm, 4.4 mm Pentaconn, dual XLR 3-pin, electrostatic)
- Speaker outputs
- Binding posts (optionally: Demograf Audio terminals)
- Special features
- Ground-lift switch
- Power supply
- External chassis: 4 × 6D22S kenotrons, galvanic isolation, choke filters, custom-wound transformers
- Internal wiring
- Proprietary “RareCoreFusion” Alloy wire (other options available)
- Mains
- 100 / 120 / 230 V — set at order time, plug to match (NEMA, Schuko, BS 1363 / type G)
- Weight (with power supply)
- From 45 kg / 99 lb
- Dimensions
- From 450 × 450 × 250 mm
Custom options
Stock items are included in the price. Every option is agreed with the atelier before the build starts.
Stage
- Single-ended — classic, detailed sound Stock
- Push-pull — twice the output power, a larger and weightier midrange and bass +50% from $54,300
Input tubes
- AL4 — more weight in the bass and midrange Stock
- EF55 — a more authentic, analogue sound
Rectifier tubes (kenotrons)
- 4 × 6D22S — a darker sound Stock
- 2 × 5C3S — a brighter sound
- Other type (on request)
Output tubes
- 845 — 20 W per channel at 8 Ω, pure Class A SE Stock
- 211 — 15 W per channel at 8 Ω, pure Class A SE
- 805 — 25 W per channel at 8 Ω, pure Class A SE
- Other similar tubes (on request)
Component upgrades
- Premium Capacitors Suite (Duelund, Mundorf, Miflex etc.)
- Tango, Tamura or Hashimoto transformers and chokes, fitted on request
- Silver AMRG Resistors & Premium Cardas Wiring Kit
- High-End Connectors Suite (e.g. Furutech Top-Tier plugs)
- Solid-core Copper Speaker Connectors
- Premium Solid-core Copper Connectors with Galvanic Gold/Silver Plating
- Vintage Tubes
- Integrated Tone Control Block Module / Filter
- Transformer taps for 4 or 16 Ω (additional winding)
- Bi-wiring integration supplement
- Tri-wiring integration supplement
- One additional Analogue RCA Input
- One additional Analogue XLR Balanced Input
- Demograf Audio High-End Swiss-Stepped Pre-Amp (similar to Stevens & Billington TX-103)
- Variable GAIN Control Module
- 4.4 mm Pentaconn Output Termination
- Dedicated STAX Electrostatic Output Interface
- Fully Balanced XLR Amplifier Architecture
- Additional Reserve Matched Pair of low-noise Tubes
Mains inlet, outlets & contacts
- AC Input: Standard Spec — IEC C14 Chassis Input Stock
- AC Input: Heavy-Duty Spec — IEC C20 High-Current Inlet
- AC Output: European Standard — Schuko (Type F)
- AC Output: US / Japan Standard — NEMA 5-15R (Type B)
- AC Output: British Standard — BS 1363 (Type G)
- AC Output: Universal Interface — Direct IEC C13 Outlets
- Contacts: Pure Copper Unplated (Organic & Balanced Tone) Stock
- Contacts: Gold Plated e.g. Furutech FI-09(G) (Warmth & Rich Midrange Texture)
- Contacts: Rhodium Plated e.g. Furutech FI-09(R) (Fast Transients & Fine Detail)
Finish & chassis
- Standard configuration Stock
- Priority build (+50% of the price)
- Precision-Milled Metal Chassis (CNC milling)
- Contoured Bent-Metal Enclosure
- Exotic Hardwood Chassis
- Glass-Integrated Aesthetic
- Premium Wood Inlays & Accents
- Solid-Billet Metal Enclosure
- Advanced Galvanic Finishing
- Custom Dimensions & Form Factor
- Parameter Status Display
- Multifunction Remote Control Suite
- Protective tube cage (child & pet safety)
Regional version
- 230 V — Schuko plug (Europe) Stock
- 120 V — NEMA plug (North America)
- 100 V — NEMA plug (Japan)
- 230 V — BS 1363 / type G plug (UK · Middle East)
Pairs well with
Which tubes does the Endymion use?
As standard, the output stage uses a pair of 845 triodes (20 W per channel); 211 (15 W) and 805 (25 W) are available to order. The input tubes are AL4, with EF55 as an alternative, and the external power supply rectifies with four 6D22S kenotrons or, for a brighter character, two 5C3S. Every pair is measured and matched; a reserve matched pair can be ordered with the amplifier.
Can it drive headphones as well as loudspeakers?
Yes. Besides the loudspeaker terminals, the front panel carries a 6.3 mm TRS and a 4-pin XLR headphone output, so the Endymion drives demanding planar magnetic headphones as well as sensitive loudspeakers. A dedicated STAX electrostatic output and a 4.4 mm Pentaconn termination are available as options.
How is the Endymion serviced?
Each unit ships with its own measurement report. The circuit is kept simple and serviceable, and Demograf Audio gear is serviced for as long as parts exist.
Which mains voltage and plug?
Each piece of gear is built for 100 V, 120 V or 230 V mains with the matching plug (NEMA, Schuko or BS 1363 / type G). The voltage is fixed at order time, so tell us where the unit will be used.
How long does the Endymion take to build?
Build time is six months or more from the queue deposit, depending on the configuration and the queue; delivery takes from one month after completion. The atelier builds seven instruments a year. A priority build is available for an extra 50% of the price: your unit is moved ahead in the build queue.
* Photos are taken from real systems and show the specific configuration of a particular customer; your unit can look the way you want — all our equipment is fully customisable.
