When looking for headphone amplifiers that pair well with your Audeze LCD-2 Classic open-back headphones and Topping D90SE DAC, several options have been recommended in various discussions and reviews.

1. Topping A90 Amplifier: This amplifier is highly praised for its synergy with the Topping D90SE DAC. The pairing provides excellent audio quality and versatility, making it a great choice for the Audeze LCD-2 Classic. Users appreciate its ability to deliver a detailed and powerful sound, enhancing the listening experience. You can find discussions on this combo on Reddit: Topping A90 and D90SE.

2. Monoprice Liquid Platinum: This hybrid amplifier is noted for its reasonable performance with the LCD-2 Classics. Many users have reported that it outperforms other amplifiers, including some higher-end options. This could be a good consideration if you prefer a different sound signature. Find more about this option on Head-Fi: Monoprice Liquid Platinum.

3. Topping DX7 Pro: While primarily a DAC/amp combo, it is also mentioned as a suitable choice for the Audeze LCD-2 Classics. It’s highlighted for its potential to adapt with future headphone investments as well, making it a versatile long-term option. More details can be found here: Topping DX7 Pro.

4. Sony TA-ZH1ES: This is another amplifier to consider, particularly for its comprehensive features and high-quality sound output. It serves well as a pre-amp and offers various output options compatible with the LCD-2. Discussions on this amplifier can be found here: Sony TA-ZH1ES.

In summary, the Topping A90 and Monoprice Liquid Platinum are two superb choices that align well with your current setup. The Topping DX7 Pro and Sony TA-ZH1ES also present excellent alternatives that can enhance your auditory experience with the Audeze LCD-2 Classics when paired with the D90SE DAC.

Sources

Amp/DAC suggestions for Audeze LCD-2 Classic - RedditDac/amp for Audeze LCD2 ClassicHeadphone Amp Suggestions - Audeze Customer Service CenterAmp recommendations for Audeze LCD-2 | Page 614 - Head-FiBest $1500 DAC/headphone amp combo?Help Choosing Headphone Amp for Audeze LCD-2Topping A90 Review –The Giant Killer - Soundnews

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