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Stax SR-009S Electrostatic Headphone

Apos Audio – New Releases: Stax and TOPPING D90

Greetings from The Headphone List and we hope you are well in these unprecedented times.  While life for most of us has changed in some way, and while we at THL are stuck at home except for the outdoor walks/exercise and occasional trips to stores, our audio gear is helping us pass the time.  And thank goodness for high quality audio, which helps us better visualize what our favorite artists intended with their amazing music. We will get through this if we’re careful, respectful, and generous.

Speaking of quality audio, Apos Audio is now an authorized retailer of Stax audiophile headphones and amps, carrying a full product line, which can be seen here.  I remember the first time I heard the Stax SR-009 headphone at CES years ago.  I was blown away by the sound and had to pull out my Spiral Ear SE 5-Way Ultimate, and the SR-009 compared favorably.  Every opportunity I have had to listen to a Stax headphone, I have taken since as they are truly blissful.


The TOPPING DX7 Pro is a quality product that punches above its weight as detailed by Pinky Powers’ review.  Topping has a new DAC that is getting great reviews, the TOPPING D90. They’ve announced the MQA version, which will be available April 25th. It has the latest AKM D/A chip, the AK4499, is equipped with an XMOS XU208 USB chip, AK4118 S/PDIF receiver chip, and a CPLD programmable logic chip. For drivers, it uses German Thesycon drivers, and comes with a pair of AccuSilicon 451584MHz and 49.1520MHz high-end femtosecond clocks.  While it doesn’t have a headphone output, it pairs well with many of the amps available at Apos Audio.  Contact them to get recommendations on the best pairing for your listening setup and sonic preferences.

Despite all that is going on, Apos Audio has a healthy inventory and is still shipping products.  They are a fantastic retailer that provides exceptional guidance and customer service, and support.  They offer Free Shipping, a Lowest Price Guarantee, Apos 2nd Year Warranty and 30-Day Return Policy on all the products that we sell.  Feel free to reach out to them and let them help you to make sure business stays good.



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Having a life-long love of high-quality audio and gadgets, average_joe got back in touch with his audiophile side after a hiatus caused by life. His focus became headphones and related gear as the size and price fit his life better than home audio. He believes the entire audio chain is important, and likes to continue to think past the headphone and on into the head, as he believes understanding the details of how we hear will lead to a better audio experience.


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