Groove Scope

Public Measurement Library

Explore documented measurements of vinyl playback systems. Each entry connects speed, stability and channel performance with the setup, source report and evidence behind the result.

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Measurements
7
Latest capture
Data licence
CC BY 4.0

Measurements

7 results

Shure V15 V with JICO MR stylus; supplied photograph cosmetically retouched with teal and amber backlighting.

Shure V15 V / JICO MR

Micro Seiki DQX500 · MA707 · Audio Research SP20 · Audient EVO4

Playback speed
33.33 RPM
Speed error
−0.02%
DIN-shaped W&F
0.025%
Separation
27.3 dB

A new JICO Custom Shop MR stylus and careful azimuth adjustment bring fresh promise to an original Shure V15 V, with closely matched channel output.

Measurement details
Stylus
New JICO Custom Shop MR
Audio interface
Audient EVO4
Channel balance
−0.01 dB
THD, left / right
0.65% / 0.49%
Record status
Draft — setup metadata incomplete

Clear, revealing sound and a quiet background are the measurer’s listening impressions. Repeat the right-channel third-harmonic check before further setup changes.

Technical files · Source report

GS-2026-0010Read the measurement
BENZ SPJ on a VYGER Atlantis; original CHARIO Academy event photograph.

BENZ SPJ

VYGER Atlantis · VYGER INERTIAL · ART USB Phono Plus

Playback speed
33.33 RPM
Speed error
−0.01%
DIN-shaped W&F
0.032%
Separation
27.4 dB

A reported 100 µm tracking-ladder pass with no setup adjustments: the measurer credits the new VYGER INERTIAL tonearm as a major contributor.

Measurement details
Audio interface
ART USB Phono Plus
Channel balance
+0.49 dB
THD, left / right
0.96% / 1.06%
Record status
Draft — setup metadata incomplete

Quick show-room capture. The 100 µm ladder pass is a separate measurer-reported observation. With thanks to Pino Viola.

Technical files · Source report

GS-2026-0009Read the measurement
Ortofon 2M Bronze on a Rega P3; cosmetically retouched supplied photograph.

Ortofon 2M Bronze

Rega P3 · Audio Research SP20 · EVO4

Playback speed
33.34 RPM
Speed error
+0.01%
DIN-shaped W&F
0.027%
Separation
32.8 dB

Strong 32.8 dB average separation and closely matched channels: a compelling 2M Bronze result in this Rega P3 system.

Measurement details
Audio interface
EVO4
Channel balance
+0.53 dB
THD, left / right
0.98% / 1.13%
Record status
Draft — setup metadata incomplete

Repeat the right-channel third-harmonic check before changing cartridge setup, as the report advises.

Technical files · Source report

GS-2026-0008Read the measurement
Technics SL-1410 MK2 turntable with Empire 7000/III cartridge; background removed and lighting cosmetically enhanced.

Empire 7000/III

Technics SL-1410 MK2 · ART USB Phono Plus

Playback speed
33.33 RPM
Speed error
−0.01%
DIN-shaped W&F
0.040%
Separation
23.8 dB

Near-nominal average speed and steady harmonics; the two measured crosstalk directions differ by about 2 dB.

Measurement details
Input interface
ART USB Phono Plus (USB Audio CODEC)
Channel balance
−0.26 dB
THD, left / right
2.26% / 1.85%
Record status
Draft — setup metadata incomplete

Harmonics were steady during recording. A repeat capture can test the persistence of the channel differences.

Technical files · Source report

GS-2026-0005Read the measurement
Illustrative DQX-500 photograph from the earlier measurement session.

Goldring 2100

Micro Seiki DQX-500 · Audio Research SP20 · EVO4

Playback speed
33.33 RPM
Speed error
−0.01%
DIN-shaped W&F
0.032%
Separation
20.1 dB

Near-nominal average speed; the report advises repeating the capture because the right-channel third harmonic changed most.

Measurement details
Audio interface
EVO4 (measurer supplied)
Channel balance
−0.54 dB
THD, left / right
1.72% / 2.15%
Record status
Draft — setup metadata incomplete

The measurer confirmed the chain separately; the reused hero is illustrative and the PDF input field is blank.

Technical files · Source report

GS-2026-0007Read the measurement
Editorial view of the photographed Micro Seiki RX-5000, SME V and Transfiguration Orpheus.

Transfiguration Orpheus

Micro Seiki RX-5000 · SME V · EVO4

Playback speed
33.51 RPM
Speed error
+0.52%
DIN-shaped W&F
0.031%
Separation
19.5 dB

The mean speed measured +0.52% while DIN-shaped wow and flutter was 0.031%; harmonic levels were steady in this capture.

Measurement details
Audio interface
EVO4 (measurer supplied)
Channel balance
−0.35 dB
THD, left / right
0.87% / 1.18%
Record status
Draft — setup metadata incomplete

Harmonic levels were steady during this recording. A repeat capture can test whether the mean speed and channel patterns persist.

Technical files · Source report

GS-2026-0006Read the measurement
Audio-Technica AT-OC9XML cartridge on a Rega RB330 tonearm playing a record.

Audio-Technica AT-OC9XML

Rega P3 · RB330 · Audio Research SP20

Playback speed
33.34 RPM
Speed error
+0.02%
DIN-shaped W&F
0.030%
Separation
31.8 dB

Strong 1 kHz separation and near-nominal mean speed; repeat before using the changing left-channel third harmonic to guide setup.

Measurement details
Tonearm
Rega RB330
Preamplifier
Audio Research SP20
Input interface
EVO4 (report label)
Tracking force
2 g
Turntable support
Wall shelf
Channel balance
−0.24 dB
THD, left / right
0.29% / 0.37%

Overhang was checked and confirmed correctly aligned. The left-channel third harmonic varied most during recording; a repeat capture can establish whether the pattern returns.

Technical files · Source report

GS-2026-0003Read the measurement

The setup gives the numbers meaning.

Cartridge, alignment, tonearm, turntable, test record, phono stage and capture path all contribute to the result. These measurements describe a documented playback chain and session. Repeat captures add context while preserving the original evidence.

Read the measurement methods