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Q My Sony Blu-ray player can play DTS-HD Master Audio soundtracks with up to 192-kilohertz/24-bit resolution. However, my receiver’s specified bandwidth is 20 Hz to 20 kHz, and my Polk 330T speakers only cover a frequency range of 33 Hz to 25 kHz. Am I losing sound quality because the receiver and the speakers aren’t spec’d to handle frequencies up to 192 kHz? — Javier Feliciano / via email

Q I know that subwoofers are recommended for use with small bookshelf or satellite speakers, but are they also needed with floorstanding tower speakers such as the GoldenEar Technology Tritons? — Frank Hendricksen / via email

Q I’m looking to buy a 65-inch LG OLED Ultra HDTV to replace my Pioneer Kuro plasma, which is now 9 years old. Here’s my question: Should I wait until TVs and other components all have HDMI 2.1 connections, or should I just buy current models? Also, can products with HDMI 2.0a connections be updated to HDMI 2.1? —Alan McClure

Q It looks like the high data rate (up to 48Gbps) of the forthcoming HDMI 2.1 standard will create headaches for the consumer electronics industry, especially the cable manufacturers. Here’s my question: Why does decompression of video data happen in the disc player or streaming box instead of the TV? If the situation were reversed, then there would be no need for new, 48G HDMI cables. —Dave Ings / Toronto, Canada

Q I love the idea of converting vinyl (especially my Mobile Fidelity Sound Lab LPs) to a hi-res digital audio format and Sony’s PS-HX500 USB Turntable seems like just the ticket.  However, I already own a high-end turntable and don’t want to buy a second one. Are there any devices I can connect to my turntable to make hi-res transfers of my record collection? Thanks —Rob Lowe

Q For the past few years I've been following the High-Res Audio "movement." After reading several articles in Sound & Vision, I finally decided to order an AudioQuest Dragonfly Black and rip a few of my favorite 90s rock/alternative CDs to FLAC format. I also downloaded the HDtracks sampler and purchased 96/24 versions of Pearl Jam's No Code and Muse's Drones. I couldn't wait to “hear my music again for the first time." Know what? It didn’t matter if I listened with my Apple EarPods, Bose SoundTrue headphones, or Logitech desktop speakers, I couldn't hear any differences!  What gives? Do I really have to spend $1000 on headphones to appreciate hi-res audio? Is the problem the distortion and effects in the music I typically listen to, or is High-Res Audio all hype? —Adam Head

A First off, let me say that I sympathize with your struggle to grasp the benefits of High-Res Audio (HRA). It’s not easy to hear differences. In some cases, there aren’t significant differences to be heard. Let me explain.

Q I have a question about playing 7.1 DTS-HD Master Audio soundtracks on a 5.1 speaker system. I understand that my receiver will mix the back rear channels into the surround channels, but will that cause the playback to lose the lossless quality DTS-HD Master Audio was designed to deliver? —Len Shift