Bang & Olufsen BeoGram 2404 Turntable (1972)

The Bang & Olufsen BeoGram 2404, introduced in 1972, stands as a hallmark of Danish design and precision engineering in the world of high-end analog audio. Part of B&O’s innovative turntable series from the 1970s, the 2404 brought advanced features like tangential (linear) tracking and a modular cartridge system to a broader audiophile market, blending aesthetic elegance with technical sophistication.

Key Specifications

Feature	Specification
Model	BeoGram 2404
Brand	Bang & Olufsen
Year of Release	1972
Production Period	1972–1975
Turntable Type	Semi-automatic, belt-driven
Drive System	Belt drive
Platter	Aluminum, 30 cm
Speeds	33⅓, 45 RPM
Tonearm Type	Tangential (linear tracking), low-mass
Tracking Method	Electronic linear tracking via guide rail
Cartridge System	B&O SM series plug-in (proprietary)
Output Impedance	N/A (designed for 47k ohm phono input)
Output Level	Dependent on cartridge
Sub-chassis Suspension	Suspended sub-chassis with damping springs
Dimensions	450 × 135 × 350 mm (W×H×D)
Weight	10.5 kg
Power Requirement	Mains-powered (110–240V via internal PSU)
Automatic Functions	Semi-automatic (auto-stop at end of record)

Historical Context

The BeoGram 2404 emerged during a golden era for Bang & Olufsen, when the company was redefining the boundaries of consumer audio through minimalist design and cutting-edge engineering. Unlike conventional pivoted tonearms, the 2404 employed a tangential tracking system, where the tonearm moves in a straight line across the record, maintaining a perfect 90-degree angle to the groove. This design eliminates tracking error and distortion inherent in radial arms, resulting in superior fidelity.

As part of B&O’s modular SM system, the 2404 used plug-in cartridges—users could swap between moving magnet types (like the SM 5 or SM 7) without tools or realignment. This innovation, combined with the suspended sub-chassis to isolate vibrations, made the 2404 a favorite among discerning listeners and interior designers alike.

Its sleek, low-profile aluminum and acrylic construction reflected the Scandinavian design ethos, often integrated into B&O’s iconic BeoVision and BeoCenter systems. The 2404 helped democratize linear tracking technology, previously reserved for ultra-high-end models, positioning B&O as a leader in both form and function.

Sound Signature

The BeoGram 2404 delivers a clean, neutral, and detailed sound profile, characteristic of well-implemented tangential tracking systems. With near-zero tracking error, it extracts fine nuances from vinyl with minimal distortion, especially in the inner grooves where conventional arms struggle. The low-mass tonearm and precision guide rail ensure accurate transient response and excellent channel separation.

When paired with a well-maintained SM series cartridge, the 2404 offers a transparent window into the recording, with a balanced frequency response and a spacious soundstage. Its performance remains competitive even by modern standards, particularly in midrange clarity and imaging precision.

Maintenance and Tips

Due to its age, the BeoGram 2404 requires careful maintenance to perform optimally:

Drive Belt: Replace the deteriorated rubber belt (available from specialty vintage audio suppliers). A worn belt causes speed instability and rumble.
Suspension System: Check the four damping springs in the suspended sub-chassis. Sagging or hardened springs reduce vibration isolation—replacements are available.
Tonearm Mechanism: Ensure the linear tracking rail is clean and lubricated. Stiff movement or jerky motion indicates dried grease or debris.
Cartridge Availability: Original B&O SM cartridges are rare. Consider using an adapter (e.g., SM-to-standard headshell) to mount modern MM/MC cartridges for better availability and performance.
Cleaning: Use isopropyl alcohol and lint-free cloth for the platter and tonearm. Avoid abrasive cleaners on acrylic parts.
Calibration: Verify tracking force and anti-skate (if applicable) using a digital scale, especially after cartridge changes.

Regular servicing every few years is recommended to preserve functionality and value.

Collectibility and Market Value

The BeoGram 2404 holds a collectibility rating of 7/10, prized for its design heritage, engineering innovation, and integration into B&O’s iconic audio ecosystems. Units in working condition with original packaging, remote (if applicable), and SM cartridges command higher prices.

Market Value: $150–$400 USD
Non-working or heavily worn units: $100–$150
Fully serviced with original cartridge: $300–$400

Enthusiasts and interior collectors alike seek the 2404 for its timeless design and historical significance in the evolution of high-fidelity turntables.

Conclusion

The Bang & Olufsen BeoGram 2404 is more than a turntable—it’s a statement of design philosophy and engineering excellence. Its pioneering use of linear tracking, modular cartridge system, and elegant construction make it a standout piece from the 1970s audio landscape. With proper care, the 2404 continues to deliver exceptional analog performance, bridging the gap between vintage charm and audiophile precision.