Graham Slee Solo Ultra Linear Headphone Amplifier

Graham Slee Solo Ultra Linear Headphone Amplifier

Designed and built for music lovers who want to hear their recordings in perfect fidelity, the Graham Slee Solo Ultra-Linear Diamond headphone amplifier allows your music to naturally breathe and flow in a way that live music does and refuses to get overwhelmed when the music becomes complex.

Key Features

• Bipolar Class AB output stage
• Greater input linearity
• high-frequency stability
• Low distortion
• Power supply upgradeable 

The Solo Ultra-Linear Diamond Edition (ULDE) headphone amplifier replicates tube amplification but is solid-state to keep its performance for its long life.

So what about tubes does it replicate? It replicates the most important difference between tubes and solid-state, that tubes give a flatter open-loop frequency response which extends into the mid frequencies before negative feedback is applied. It means that when it's applied to keep distortion low, it is true 180° negative feedback, and it gives a wholesome sound which otherwise is sadly lacking in solid-state.

We use our proprietary and well-guarded bandwidth extension technique we call Ultra-Linear which replicates this most desirable of tube characteristics.

The Solo ULDE has a completely redesigned output stage and better noise performance than the earlier Solo UL, which means it will drive a much greater range of high-performance over-ear dynamic headphones, and be hiss-free when used with in-ear monitors.

Unlike tube amplifiers, it works with all common headphone impedances, and its Z-Match impedance ranging volume control takes the place of gain switches, allowing amplifier gain to be fixed so it results in optimum musical performance.

Generous phase and gain margins give it great high-frequency stability under all loading conditions. This coupled with its wide input latitude lets it effortlessly reproduce large musical transients with real clarity.

Excellent power supply filtering and ultra-stable voltage regulation make its power so clean that it depicts the minutest of detail, the nuances - the shades of expression, so your music really communicates with you.

It also results in superb stereo imaging with great separation between performers and instruments, dispensing a believable stereo sound stage.

The Solo ULDE reveals the emotional content of your music and will immerse you in your music without fatigue for hours on end.

The lack of treble glare and superb clarity throughout the frequency range is due to the low distortion at all frequencies, and its very wide bandwidth with low negative feedback. A very high input overload margin allows it to remain uncompressed when fed with dynamic music, whilst its high current output stage can drive a very wide variety of headphones of different impedances. The unit comes with a plug-top power supply as standard, whilst the Graham Slee PSU1 regulated DC power supply is available as an optional upgrade for improved sound quality.

The diamond edition is also available to order. If you have any questions about the headphone amplifier options, please give us a call in the shop.

Who is Graham Slee?

Graham Slee is a small, enthusiastic manufacturer of realistically priced, high-performance phono stages and headphone amplifiers, designed and built by hand in Yorkshire since 2003. Very positively reviewed by the UK and international magazines, demand for these products has been overwhelming as the world's hifi enthusiasts can't believe the performance of the price asked.