EMT 927 (1951–1970s)

When the platter starts spinning, it doesn't wobble. It glides.

Overview

The EMT 927 was not built for showrooms or living rooms. It was built for broadcast studios that needed a turntable that could run 24 hours a day, seven days a week, without missing a beat. It did, and decades later audiophiles pay more for a restored 927 than most people pay for a car. It is a machine built on neutrality, stability and brute-force engineering, and it doesn't care whether you like it.

Introduced in 1951, the EMT 927 was designed in cooperation with the Rundfunktechnisches Institut (Broadcasting Technique Institute) under Dr. Ing. Walter Kuhl, with one goal: to play the 16-inch acetate transcription discs used in radio broadcasting. The 44 cm (17.3-inch) platter was a necessity, not a styling choice. The whole machine is overbuilt, with a cast aluminum chassis, a precision ball bearing with a 16.6 cm shaft, and a three-phase synchronous motor that looks like it belongs in a factory. The idler-wheel drive is shared with the Garrard 301 and Thorens TD-124, but here it uses no plastic gears and no flimsy rubber, just industrial-grade components meant to last decades. Owners report near-total mechanical silence, thanks to the dual-chassis design that isolates the platter and tonearm assembly from the motor and electronics.

Despite its studio origins, the 927 has become a holy grail for audiophiles, often cited in online forums as "the best turntable ever made." Its sound is described as immense, effortless and muscular, which comes from its mass and rigidity. The 12-inch tonearm, either the original Ortofon RMA-297 or the later EMT 997 "banana" arm, tracks with near-zero lateral movement. One owner noted that the arm "hardly moves; as if the arm were all the time exactly at the same position while the record is playing." Critics of the 927 are rare, and when they appear they usually cite its weight, complexity and cost, not its sound. It isn't delicate or "airy."

Specifications

Key Features

Idler-Wheel Drive with Industrial Precision

The EMT 927's idler-wheel drive is often compared to the Garrard 301 and Thorens TD-124, but it sits at a different level of engineering. Instead of a consumer-grade rubber wheel, the 927 uses a precision-machined idler that transfers power from the motor to the inner rim of the platter. The motor is a three-phase synchronous type, massive and built for continuous operation. Belt drives isolate the motor but can suffer from belt stretch and degradation. Direct drives risk motor noise transmission. The 927's idler system delivers high torque and rock-solid speed stability with minimal wow and flutter. The trade-off is complexity. The idler needs regular maintenance, and the motor must be matched to the mains frequency (50 Hz or 60 Hz). Running a 50 Hz model on 60 Hz power without a frequency converter can cause speed inaccuracies and increased wear. Many describe the drive as "musical."

Massive 44 cm Platter and Precision Bearing

The 927's 44 cm aluminum platter is its most obvious physical feature. At over 17 inches in diameter, it dwarfs even the largest consumer turntables. The size was functional, allowing radio stations to play 16-inch transcription discs without modification. The platter rides on a precision ball bearing with a 16.6 cm shaft and a 2 cm diameter, which keeps runout minimal and rotation stable. The bearing is "wet," filled with special EMT oil (25 cc) that must be changed during servicing. The oil bath reduces friction and wear, which helps explain the turntable's longevity. The platter's mass provides inertia, smoothing out speed variations and rejecting external vibrations. Combined with the dual-chassis suspension, this leaves owners reporting a tonearm that appears motionless during playback, even on warped records.

Studio-Grade Electronics and Modularity

The 927 was designed as a complete studio system, not just a turntable. Early models lacked onboard equalization and required an external unit like the EMT V-133 or V-83. Later versions integrated the EMT 139 (mono) or 139st (stereo) tube preamplifier, with a transition to the solid-state 155st in the 1960s. These preamps had selectable equalization curves (0, 25, 50, 75 µs), which was needed when different recording standards coexisted. The outputs are balanced and transformer-coupled, designed to drive long cable runs in broadcast environments. The 927 also supported various options, including an optical groove indicator (927A), a second tonearm (927F), and a laboratory-grade reference version (927D) with tighter tolerances.

Historical Context

The EMT 927 was born in postwar Germany, when radio broadcasting was expanding and needed reliable, high-quality playback equipment. Founded by Wilhelm Franz in 1938, EMT (Elektro-Mess-Technik) already had a reputation for precision measurement devices. In cooperation with the Rundfunktechnisches Institut, Franz designed the 927 for radio stations that needed turntables able to handle 16-inch acetate discs and run continuously. It was never meant as a consumer product. Its success led to the more compact EMT 930 in 1956, which shared many of the 927's design principles but was aimed at smaller studios. As stereo recording became standard, the 927 was adapted with stereo wiring and the 139st preamplifier. Despite the rise of direct-drive turntables like the EMT 950 in the 1970s, the 927 remained in production for decades. Today it is no longer used in studios, but audiophiles value its stability.

Collectibility & Value

The EMT 927 is one of the most sought-after vintage turntables, and prices show it. A fully restored 927 with a matching EMT 139st-B tube preamplifier can fetch over €3,500, while complete systems with rare cartridges and shock-absorber frames have sold for more than ¥3.7 million (approximately $25,000). Condition is critical. These are heavy, complex machines that suffer from age-related wear. Common issues include dried-out idler wheel rubber, degraded motor capacitors, and dried bearing oil. The idler wheel, made of Vulkollan rubber, is particularly prone to hardening and cracking, which can cause speed instability and rumble. Service requires specialized knowledge and parts, many of which are no longer manufactured. Restorers like Hans van Vliet in the Netherlands are essential for proper refurbishment. Buyers should inspect for corrosion, verify motor function, and make sure the platter bearing is smooth and quiet. The 927 was never cheap, and it still isn't.

eBay Listings

2 x EMT 927 928 930 938 948 950 Height Adj Gauge

$45.00

EMT139A EMT139B POWER SUPPLY (EMT927. EMT930. EMT139ST.PS13

$699

EMT parts 927

$224

Neumann DST replica (dst62 tsd15 emt927 emt930 neumann wv2

$5,200

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Related Models

• EMT 140
• EMT 250/251
• EMT MODEL-250
• EMT MODEL-252
• EMT TSD-15