Power supply MUST be chosen for a complete turntable! Choose between 3 different power supplies for your Fat Bob Turntable.
The maximum as standard - Transrotors classic Fat Bob S with TMD bearing
The Transrotor Fat Bob S is a high‑mass, belt‑drive German turntable that combines minimalist industrial design with an advanced magnetic bearing system to deliver extremely low noise and superb speed stability. Built around a massive polished aluminum chassis and 12 kg platter, it is engineered to drain and suppress vibration so the cartridge can retrieve maximum detail and dynamic contrast from the groove.
Design and construction
The Fat Bob S uses a solid 40 mm hand‑polished aluminum chassis that serves as both plinth and support for the bearing and armboard, eliminating unnecessary panels and joints that could store energy. Its visual identity is dominated by the oversized circular platter and compact footprint, giving it a sculptural, almost monolithic look on the rack.
The platter itself is a 60 mm thick, approximately 12 kg slab of hand‑polished aluminum that provides high rotational inertia for stable speed and excellent rumble suppression. Three height‑adjustable feet allow precise leveling while firmly coupling the deck to the support surface for optimal energy evacuation.
Bearing and drive technology
At the heart of the Fat Bob S is Transrotor’s TMD (Transrotor Magnetic Drive) bearing, which uses a magnetic coupling between the drive element and the platter to reduce mechanical contact and vibration transfer. The bearing is hydraulically supported and inverted, further lowering noise and improving long‑term running accuracy.
An outboard AC motor sits separate from the chassis and drives the platter via a belt running around a machined pulley, isolating motor vibration from the record surface. A dedicated regulated power supply provides selectable 33 and 45 rpm speeds with fine pitch adjustment, allowing precise calibration with a strobe disc or test record.
Tonearm and upgrade potential
The deck is supplied in many markets with a quality tonearm such as the Rega RB330, but is designed to accept a wide range of high‑end arms via interchangeable armboards. A second tonearm base can be added, including for 12‑inch arms, making the Fat Bob S attractive for users who want to run multiple cartridges or arm geometries on a single platform.
Transrotor offers accessory and power‑supply upgrades (including higher‑end Konstant supplies) to further refine speed stability and noise floor. This modular approach lets the owner start with a very capable base configuration and progressively enhance performance as the system and budget grow.
Sonic character and positioning
In use, the Fat Bob S is voiced as a highly resolving yet musically engaging turntable, with the mass‑loaded architecture providing powerful bass, solid imaging and excellent microdynamic nuance. Its combination of TMD magnetic bearing, heavy platter and outboard motor gives it the kind of black backgrounds and timing precision typically associated with far more expensive reference designs.
Within the Transrotor lineup, the Fat Bob S TMD is regarded as an iconic core model that encapsulates the brand’s engineering philosophy in a relatively compact, domestically friendly form factor. For serious vinyl enthusiasts, it functions as a long‑term reference platform that can anchor very ambitious cartridges, arms and phono stages without becoming the limiting factor in the chain.
Specs:
Core construction
Chassis: Solid aluminum, 40 mm thick, hand‑polished.
Platter: Solid aluminum, 60 mm thick, hand‑polished, approx. 12 kg mass.
Bearing: Transrotor Magnetic Drive (TMD) bearing with hydraulic / hydrodynamic platter support and inverted oil‑fed design.
Record clamp: Aluminum clamp, approx. 370 g.
Finish: Polished aluminum throughout, with black platter mat as standard.
Drive, speeds and electronics
Drive system: Belt‑drive with external AC motor block, decoupled from main chassis.
Speed options: 33⅓ rpm and 45 rpm, switchable via external power supply.
Speed control: Choose from Konstant EINS "one", Konstant Studio or Konstant M1 Reference.
Principle: High‑mass flywheel effect from 12 kg platter plus magnetic coupling for low wow & flutter and reduced motor‑borne vibration.
Tonearm and cartridge options are AVAILABLE - PLEASE CALL FOR MORE INFO 406-285-3910
Rega, Reed or Transrotor tonearms available.
Arm compatibility:
One tonearm base as standard, second tonearm base optional.
Accepts 9‑inch and 12‑inch arms (e.g., Rega, Sorane, SME, Reed, Transrotor arms).
Typical cartridge packages: Often bundled with Transrotor MC Merlo or Uccello cartridges in some configurations, though the deck is sold “table‑only” in others.
Dimensions and weight
Manufacturer and distributor specs cluster tightly; differences reflect options and rounding.
Width: 44 cm (approx. 17.3 in).
Depth: 38 cm (approx. 15.0 in).
Height: 18 cm (approx. 7.1 in).
Weight (deck only, depending on configuration):
Approx. 20–25 kg from factory specs and distributors.
Some retailers list 55–66 lb (25–30 kg) including certain arm/power‑supply options.
Chassis
Aluminium handpoliert
Platter
Aluminum/Acrylic
Platter Weight
Aluminum
Tone Arm Base
Second tonearm is possible
Other
TMD bearing as standard
Dimensions and weight
Width
44 cm
Depth
38 cm
Height
18 cm
Weight
25 kg