Alternative
A Transrotor Konstant alternative: what to check first
Isostase is designed to replace the original power supply (Konstant EINS, Konstant M1 Reference…) on single- and dual-motor Transrotor turntables. This page sums up what stays the same, what changes, and what to check before choosing.
What stays the same
- Your turntable and its motors: Isostase drives the original Transrotor motors, one or two.
- The usual speeds: 33⅓ and 45 rpm.
- The principle: a sine wave of controlled frequency and amplitude fed to each motor.
What changes
| Original Konstant Eins | Isostase | |
|---|---|---|
| Speed measurement | No sensor on the platter, to our knowledge (open loop) | Contactless optical sensor, one correction per revolution |
| Frequency reference | Not stated by Transrotor | Quartz, factory-calibrated |
| Speed setting | Fine-adjustment potentiometers, single-turn | Calibration through the menu, quartz reference |
| Phase of each motor | Not stated by Transrotor | Adjusted automatically, motor by motor |
| Motor current | Not stated by Transrotor | Measured on each motor |
| 78 rpm | Needs a special pulley | Supported natively, set electronically, no special pulley needed; enough output voltage to drive one or two motors |
| Number of motors | One to three (FMD, according to Transrotor) | One or two |
| Availability | In production | Launch late 2026 / early 2027 (indicative), approx. €1,990 incl. VAT |
The "not stated" cells do not mean the feature is absent: they mean we found nothing on Transrotor's page, and we do not guess.
Limits to know
- Three-motor turntables are not supported for now.
- Speed is corrected once per revolution. A faster variation is displayed, not corrected: see Konstant FMD and closed-loop control.
- The optical sensor needs room: we need two dimensions of your turntable to fit its housing.
- Olydyne is neither affiliated with nor endorsed by Transrotor. Transrotor and Konstant are trademarks of their respective owner.
What has been measured
The first measurements compare Isostase with two original supplies, left unnamed: speed, wow and flutter, distortion. They were made on a single unit of each supply, so they show a tendency, not a statistic. Details in Speed, wow and flutter measurements of a Transrotor turntable.
Source for the Konstant column: Transrotor, Konstant FMD page (consulted October 2026).
Is your Transrotor compatible?
The list of supported models is on the Isostase page. Model missing? Ask, with your turntable's name.
Related videos: Discover Isostase