Audiophilepure

Anyone looking for a fuller bottom end with these headphones needs to hear them on the AMP-23R as soon as they possibly can! Transparency and clarity were equally there in this pairing and I was so very impressed with the AMP-23R’s ability to portray even the smallest of details and nuances within a recording with complete ease. This amplifier was simply the best I’ve heard these headphones sound and I’ve heard the Susvara through many top-flight desktop headphone amplifiers (and several speaker amps as well). If you own these headphones, please check this amplifier out…you will not be disappointed!

https://www.hifinews.com/content/ifi-audio-pro-idsd-signature-usb-dacheadphone-amp

This Signature version of iFi Audio’s flagship DAC/headphone amp may look a bit much for some tastes – I think I prefer the more understated styling of the ‘standard’ model – but there’s no denying the appeal of its rich, weighty, controlled and highly informative sound. Just don’t get caught up in all those filters and adjustments because this is a headphone amplifier that’s made for sitting back and enjoying.

https://www.whathifi.com/us/reviews/mcintosh-mha200

There are valves at the heart of this unit – four in total – made up of a pair of 12AT7s in the driver stage and 12BH7As in the power stage. These run warm and are usually protected from prying fingers by a removable cage. Next to the valves is a trio of transformers: one for the mains and two that couple the amplifier’s output valves to the connected headphones. As with most valve products, a certain amount of care has to be taken over matching. Here, that takes the form of a front panel control that switches between four load options: 32, 100, 250 and 600 ohms. Simply switch to the one that’s closest to the nominal impedance of your chosen headphones for the best results. There’s no harm in trying an alternative setting, and it can be fun to try, but we would be surprised if doing so leads to a better sound.

https://www.stereophile.com/content/ifi-zen-can-headphone-amplifier-zen-dac-signature-v2-da-processor

I was surprised that these ZEN Signature sets, used as directed, produced too much volume with the recommended headphones. Once that was fixed, with the iFi iEMatch attenuator, the ZEN Signature sets delivered highly resolved, clean, pristine, dynamic sound. The amplifiers are powerful. Backgrounds black as a new-moon nighttime sky brought musical details to the foreground. These two components sounded more expensive than they are and offer impressive sound quality—and a bit of style—for not a lot of money.

https://stereo-magazine.com/review/vincent-khv-200-review

When you look at the significantly higher prices of the competition, this price tag could make you suspect that the KHV might be a case of false advertising after all. Depending on your temperament, you can now lean back and relax again or move your upper body forward with curiosity, though. The southern-German-based company Vincent is known for attaching price tags to its products that sometimes cause a great deal of worry amongst the competition.

With the Questyle CMA Fifteen, the Sabre DAC finally comes into its own. Questyle has long made one of the better-sounding solid-state amplifiers combining the musicality of a tube amp with the raw power and bass control of a solid-state and a linear bandwidth that puts most amplifiers to shame. As more and more manufacturers dive into the Current Mode Amplification, Questyle remains at the head of the pack with a fifteen-year head start. An incredible value in the price range, the CMA Fifteen has well earned its status as flagship offering exceptional musicality, soundstage, imaging, dynamic range, and raw power, able to drive well headphones that leave higher Wattage amplifiers wanting because current is to Wattage, what torque is to horsepower.