Those look like preamp tubes right? And it’s just 2 of them? I’d just leave them on, unless there’s a 
risk.
If you had tubes in the power amp section, then it’s better to turn them off. Power amp tubes tend to be more expensive, not to mention some amps always need to see a load (sound transducer). At least, this is my experience with guitar amps.
Cheers. 
If you’d rather replace your tubes than your entire amp, turn it off when you’re done using it.
Even less. The Douk P1 amp specs call for 6J5 tubes. They start at less than $10 each. You’ll likely spend more on electricity running the amp than on new tubes.
It’s a $99 amp. In my experience this type of product often burns out its (external) power supply. Yes.
i bought it a few days ago. should I return it if it is so unreliable?
Splitters? I stopped using them long ago because none of them preserved a clean signal.
I’d return it if it’s not working, and if returns are allowed. However, try other cables to confirm.
I dont use spliiters. also its from amazon so I think its returnable.
My question relates to speakers used for both music and movies (each through an amp/AVR, respectively).
My room is on the small side - 14 x 16, with the front towers and subwoofer positioned in front of the 14’ wall. My subwoofer is on the outside - that is, closest to the 16’ wall.
For purposes of listening to music, am I better off with the current placement or might the soundstage improve/broaden by moving the tower speakers to the outside with the sub taking the inside position? (Would the answer be the same for movies?)
Yes, I could and will move these around and test, but just wondering what conventional wisdom provides. I seem to sense it’s my current set up, but I love contrarian thinking.
Thanks for any advice you can offer.
SVS subs page has an excellent article on sub placement.
For music, I always preferred it dead center between my two speakers to avoid corner loading it and to try and keep the soundstage coherent.
But that really depends on your room, and where it is crossed over with your speakers.
Here’s another resource about subwoofer placement that may be of help…
I am new here and would like to post my ZMF Eikons on the Buy&Sell forum. I have lurked on the forum for a while and would like to see that they go to a good home. How may I ask do I create a new topic? I do not see this option available to me. Thanks for the help.
You need to have been an active participant here for a while to gain the ability to post new topics, including in the Buy/Sell category.
“Active” means engaging in existing topics and discussions, not just reading them.
You could use the “crawl” method, which is a bit of work but will yield very good results. You basically place the subwoofer in the center of your room/your seating area, and while playing some bass heavy tracks you then get down to ear level (so basically crawling) and listen to how it sounds at the locations you want to place the subwoofer; then place the subwoofer where it sounds best. So, in your case, I’d “crouch” or “crawl” between the speakers, and then check the corners or other potential subwoofer locations. Subwoofer bass isn’t localizable, but it’ll still sound more even and enveloping if you place the subwoofer properly. Oh, and I second the recommendation to lift it off the floor a bit. A “SubDude” will do the trick.
If you want to get real technical, invest in a decent calibrated microphone and use REW to measure the in-room response. That’s what I did back in the day when I had three custom-built 15" sealed subs using the TC2000 driver.
which is the best headphone for listening to surround sound with an analog cable(connected to the 6,25 mm phones output of my yamaha cx-a 5100 surround processor ? yamaha YH-L700 A or audèze mobius) i listen to cd’s, sacd’s, blu-ray discs, 4k discs, dvd-audio)? i am not a gamer.
Generic, i have a question for you. If i want to buy a dac that is not a dongle but has a usb output can i use with my phone? As i said im using the app usb audio player pro. Which is " true" usb. I know i need usb type c otg for inserting into my phone.
I’m not Generic but yes, you can connect your phone to a DAC via USB. However, in the case of desktop style DACs, it is a good idea to choose one that has external power to it, not just powered via USB.
(Just as a note, the DAC has a USB input not output, your phone is outputting via USB)
I’m busy right now and unable to answer, but maybe this should be moved to a General Question thread?
Not sure where to put this, but I was looking for something on loudspeakers that sound good at low listening levels. I found this on another forum that shall remain nameless - you’re free to guess - and I found it so funny that I wanted to post it here. It shows the difference between us and them. Probably useful for people looking for audio advice.
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I’m no expert, but IMHO this is somewhat of a paradox and a curse of a better loudspeaker and our ears cannot be trusted on this. In a similar fashion, when you have a better car it will feel like standing still when actually going over speed limits. I think this is due to combined mechanisms of perception and the way we make sense of it. But when we look at the speedometer we can trust it and suspend disbelief.
He goes on to suggest is the solution is simply not to play music at a low volume, and to further suggest that neighbors will perceive louder volume music on good speakers as quiet.
The source of the above text is easily findable via search for a sentence or two. Why would @pennstac ever seek anything that sounds “good” at that place? How does “good” measure? What is the SINAD of “good”? Stop this funny business, sir!
Believe numbers. Doubt your senses. Be cruel to be kind. Suffer to feel joy.
And this is from an “audio” site…. Just fantastic, truly remarkable, astonishing stupidity. Thanks for sharing this gem, it made me chuckle.