Pyle 2x120W Mini 2-Channe Home Audio Power Amplifier - Bluetooth 5.1 - Stereo Receiver with RCA/AUX/Mic Input - Headphone Jack - Pager/Mixing Modes - Bass/Treble EQ - For PA, Theater & Studio - PTA4

I'm using this amplifier primarily for a cassette deck connected to powered speakers, as the speakers couldn't get very loud with the RCA cable straight from the deck. Bought one of these as open box for $30 and it has been the perfect boost to the sound that I needed.Unlike the newer model of it, this unit has volume dB meters, and there are several inputs for flexibility and potentially connecting multiple devices. Three RCA inputs, an RCA output labeled Recording, one 3.5mm aux input, a 1/4" microphone input, and finally, a 1/4" headphones output. I'm using that last option to connect to my powered speakers with an adapter to 3.5mm. I have Bluetooth capability with my powered speakers, and that already played quite loudly, so I haven't tested Bluetooth functionality on the amplifier.Newer models seem to reduce the number of corded input options and took away the volume meters, so that's why I stuck with this older model. One downside to this model is it does not come with remote, something I was aware of, but I'm happy using the tactile knob. What I do find strange is the knobs have a tactile middle-position where you'd assume they should be pointing straight up, but they're actually tilted a bit when they fall into that middle-position notch.My only grievance is now with my cassette deck as the meters on it read higher, or even max out during playback using the amplifier. I found this odd since my setup is deck -> amplifier -> speakers, and I didn't expect the deck would be affected. The deck doesn't have an output adjustment, but it's only for recording that I need to care about the levels on the deck, and I do have an adjustment knob for input recording level.Making up for the deck meters now being too sensitive, the PTA4 amplifier has its own volume meters, and those seem to work well during playback, though the amplifier's volume control has to be balanced with the volume control on the powered speakers to get the right dB readings. If you set a low volume on the speakers, you can crank up the amplifier volume dial and max out the amp's meters with ease. With the speakers set to a very high volume, you can also keep the amplifier volume very low to the point where the meters won't light up.Without powered speakers, I assume you'd need a deck with output level control to be able to "calibrate" the amp's level meter to match the deck, if the accuracy of these meters is important to you. I haven't yet tested non-powered-speakers to see how high or low those meters register when connected through speaker wire. If you're using a device where you can set the volume at the source, such as powered speakers or a mobile phone, then don't even worry about that.

I've bought two of these for my audio device workshop. They're small but powerful, and no distortion or other audio artifacts. Just really handy amps to have whereever you have limited space or you don't want a full-sized rig. Recommended.

PYLE PTA-4 Bluetooth AmpWhat a surprise. This little amp kicks butt! I started with some small 2 way Klipsch SB2 speakers and was so impressed that I hooked it up to my Klipsch Forte II speakers, (three-way speakers with 12 inch wolfers), $5,000 a pair if you buy new models today. Wow. I could crank it up loud, really loud, and it all sounded good. No audible distortion and totally enjoyable at sound levels well above what I usually play. I wasn't playing chamber music either. Suicide Blonde by INXS, great! Living Thing by ELO, with the bass turned up, great! Quiet bed time music like George Winston plays low and mellow without any hiss or hum.All in all, impressive for a little 8 inch, 4 1/2 pound amp that fits in one hand and cost $75 at full retail. I paid $50 for it, on sale, at Amazon. I just wanted to test a really really inexpensive class D amp. It's not class D. Pyle doesn't claim to be. It's class AB, which is a better choice.Stereo Hi- Fi has been a big part of my life every day since 1972. I've owned and used lots of amps and receivers; Marantz, Sony Harmon Kardon, Sansui, Kenwood, JVC, Technics. Heath Kit and a few more.It's close to impossible to find a balance control in this sub-$100 price range, but little Pyle PTA4 has it. Without a balance control I am not interested., unless it's going to be used exclusively on your desktop while sitting dead center in the middle.It's important to note that the Klipsch speakers I used are high efficiency speakers, also called “high Sensitivity”. Thats important with this little amp.A high sensitivity speaker should produce 96- 98 dB of sound at 1 meter. A speaker with an 88 db efficiency rating will require 10 times more power than one with a 98 db rating to reach the same volume.Ignore that 120-watt rating. That’s Pyle BS! It’s probably 20- 25 watts per channel. I don’t have instruments to test it. There are many high efficiency speakers; BIC, Cerwin Vega, Pioneer, and others. Look for the “sensitivity “rating on the spec sheet.Now the Bad News. 1st. When you turn it off it makes a loud pop through the speakers. Ugh! Obnoxious. I hope this is a defect in this particular unit. 2nd. Warranty. Apparently, it has a 1 year warranty. It included a card encouraging me to register online for a 1-year warranty but I can't get into the website and the phone number got nowhere. Easier to return it to Amazon and buy another one. 3rd. There is only one pair of speaker terminals, which is acceptable at this price, but the instruction sheet has a diagram of how to hook up 2 pairs of speakers. Do not follow that diagram. There is a tiny but very the critical mistake in it. Find a diagram for PARALLEL speaker hook ups somewhere else.Conclusion. Pyle.... You have a winner if you follow through. Test before boxing and improve website. Want some respect? It's within reach. Your Amazon presentation is excellent.Important note. I paid for this unit in full with my own money. I am NOT getting ANY compensation for this review.

I use this in my ham radio setup. The amp is resistant to RF interference and the headphone jack mutes the speakers. The sound is good and turn-on thump is well controlled. Great value. This is the ONLY amp I've found that combines: 1. Reasonable cost. 2. Headphone jack 3. Tape out jack 4. Good performance

I bought the original version of this amp 6 years ago to run my all room speaker system. It worked great until just recently when it just stopped working. The new one they sent me came in a brown box (strange) and worked for about one second and then went "POP" and completely died!! Obviously, the quality is dubious at best. Sorry, because the first one worked great and was worth it, but this new one is complete junk! Probably best to look elsewhere.