Lyra Kleos Mono Moving Coil Cartridge

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Although many MC cartridges have good performance, their sound is held back by how they are designed. The problem is, the signal coils should have the same angle as the magnetic circuit during playback, but MC cartridges are typically designed so that the opposite happens - applying normal tracking force pushes the coils out of alignment. This impairs coil sensitivity and linearity, and reduces sound quality.

Lyra's "New Angle" technology solves this fundamental problem by compensating for how the signal coils are affected by vertical tracking forces, and optimally aligning the coils when it matters most - during playback. Introduced on our entry-level Delos, the New Angle technology enables the Delos to perform well above its pricepoint.

But being audiophiles, Lyra wanted to achieve the next higher level - which is the new Kleos. Building on New Angle technology, the Kleos innovates with a stronger chassis machined from aircraft-grade alloys, narrowed mounting area to improve energy transfer, and pre-stressed construction combining multiple materials with non-parallel surfaces to inhibit internal body resonances. The fully hand-made Kleos also has a Lyra-designed line contact stylus and platinum-plated output pins, achieving an exceptionally quiet noise-floor with superior immediacy, resolution and tracking, wide dynamic range and explosive transients, plus a warmer and natural tonal balance. The Kleos is a high-value cartridge that surpasses the sound quality of substantially more expensive cartridges.

On mono records, the vertical axis of the groove contains no musical information, but it will frequently have noise, in the form of groove damage and dirt. The Kleos Mono has therefore been designed to be completely insensitive to the vertical axis, which greatly improves the signal/noise ratio without any downside on monaural records.

The coil former is a square permeable plate oriented parallel to the record surface rather than the 45-degree angle used for most stereo cartridges, while the coils are wound so that they only generate a signal when there is horizontal movement of the stylus and cantilever when tracking a record.
Two totally separate monaural coils are used in the Kleos Mono, since most monaural cartridges are used with stereo amplifiers and stereo speakers. The separate coils also help avoid possible ground loops and hum problems that could otherwise be caused if a single coil is fed into a stereo two-channel amplification system, thereby tying the two channels together electrically.

Specifications

- Type: Medium Weight, Medium Compliance, Low-Impedance Moving Coil Cartridge

- Stylus: Lyra-Designed Long-Footprint Variable-Radius, Line-Contact Nude Diamond (3um x 70um), Slot-Mounted

- Cantilever System: Solid Boron Rod with Short One-Point Wire Suspension, Directly Mounted into Cartridge Body

- Coils: 2-Layer Deep, 6N High Purity Copper, Square-Shaped Chemically-Purified High-Purity Iron Former, 5.4 ohms Self-Impedance, 9.0uH Inductance

- Output Voltage: 0.5mV@5cm/sec., zero to peak, 45 Degrees (CBS Test Record, Other Test Records May Alter Results)

- Frequency Range: 10Hz - 50kHz

- Channel Separation: 35dB or Better at 1kHz

- Cartridge Weight: 8.8g

- Recommended Tracking Force: 1.65g - 1.75g