Malysh (The Kid)

Malysh

Tube Push-Pull Class A/AB Amplifier with Fixed Bias

Sovereign Audio Platform. Planned as a KIT.

Malysh is a project for EVERYONE. Planned for release as a kit after R&D completion and prototype assembly. Tube technology reimagined through modern control and analysis systems.

1. Architecture and Concept

Parameter	Value
Type	Tube Push-Pull Class A/AB Amplifier
Platform	Universal Tube Wall-Stand (Tube-Agnostic Platform)
Key Feature	Built-in Curve Tracer (Ia/Vg Meter) and Digital "Conductor" (Auto-Bias)
Control	Arduino Nano (C script), USB/Ethernet interface

2. Modular Structure (3 Boards)

Board #1: Front-End (Signal)

Parameter	Description
Size	300 × 50 mm (2-layer, Ground Plane on bottom)
Components	2× 6N23P-EV (driver/phase inverter), ALPS potentiometer (motorized)
Inputs	RCA on front panel
Mounting	Sandwich: Tube sockets on trace side, tubes pass through chassis. Components in chassis basement, signal traces between steel chassis and Ground Plane on board's bottom side

Board #2: Tube Controller (Brain, Optional)

Parameter	Description
Size	63.5 × 35.5 mm (pre-production format)
Chip	Arduino Nano (or STM32)
Features
— Auto-Bias	Hold idle current (45–60 mA) with 0.1 mA precision
— Curve Tracer	Automatic Ia/Vg curves when swapping tubes
— Emission	Residual tube life measurement (Emission Health Check)
Connection	USB (Arduino Nano) or Ethernet (production)

Board #3: PSU (Power Supply)

Function	Description
Rectifiers	Separate rectifiers ("dual mono")
Filters	Driver filters
Bias	Negative bias supply (-60V)
Logic	Logic power (+5V)

3. Hardware (Atoms & Iron)

Output Transformers (TVZ)

Version	Description
Production	OSM-0.063 in steel caps ("pots"), factory made

Power Transformer

OSM-0.16 (factory made)

Chokes

2× OSM-0.036 (on top panel in caps)

Enclosure (Heavy Metal)

With this set of iron and the steel chassis concept, Malysh emerges as a true Heavy Metal. Despite its name, this apparatus will weigh like a proper kettlebell.

Detailed weight breakdown by "atoms":

Component	Weight
1. Transformer Group
Power Transformer OSM-0.16 (ШL 32×40)	~3.2 kg
Output Transformers (2 pcs. PL 16×36)	~3.6 kg (1.8 kg each)
Chokes (2 pcs. OSM-0.036)	~1.6 kg (0.8 kg each)
Total for copper and iron	~8.4 kg

2. Enclosure and Shielding
Chassis (430×300×45 mm, steel 2 mm)	~2.8 kg
Caps ("Pots", 5 pcs)	~1.5 kg
Bottom cover and fasteners	~0.8 kg
Total for metal	~5.1 kg

3. Components and Tubes
Capacitors (2000 µF cans)	~0.6 kg
Tubes (4×G-807 + 2×6N23P)	~0.5 kg
PCBs (3 pcs), heatsinks, ALPS, wires	~0.4 kg
Total for "misc"	~1.5 kg

✅ Total estimated weight of Malysh (The Kid) amplifier:

~15.0 kg (± 1 kg)

Benefits of this weight:

Aspect	Benefit
For Sound	Large mass and steel chassis perfectly dampen tube microphonics and transformer vibrations
For Image	When a KIT buyer lifts a 15 kg box, they understand they bought a "thing", not an empty tin can
For Logistics	15 kg still passes standard CDEK/Post tariffs without special equipment

This is real "cast iron" sound!

4. Tube Agnostic

Thanks to the controller and chassis supporting all necessary sockets, you can build an amplifier using your existing output tubes and sockets:

Tube	Characteristic
G-807	Charisma and power
6P3S / EL34	Classic
6P36S / 6P44S	Low impedance, bass control
GU-50	Tank sound

5. Project Economics (KIT)

Parameter	Value
Format	KIT — planned for release
Components	Factory transformers (TVZ OSM-0.063, TS OSM-0.16), chokes (OSM-0.036), enclosures, pre-assembled PCBs, component sets
Kit Cost	~52,000 RUB
Retail Price	75,000 – 85,000 RUB (full config with motorized volume, Tube Controller with Ethernet and turnkey assembly)
Positioning	Sovereign Audio Platform. Taming the power of G-807, GU-50. For Sound Gardeners.

Documentation

🔊 Amplifiers — amplifier specifications
⚙️ Iron — transformers and winding