I bought this to use with high ohm headphones and my iPad. I have noted, so far, a marginal improvement in overall volume and sound quality using it vs, connecting the phones directly to the iPad. The volume knob is fairly sensitive. It is necessary to keep the gain switch on high. I have a more expensive amp/DAC for use with my iPhone which produces noticeably superior sound quality but as an inexpensive solution for the iPad (which is not supported by the amp/DAC, it is worth the $$. I haven't had to recharge it yet after several short term uses.
Denon AVR-2113CI Networking Home Theater Receiver: AirPlay, Powered Zone 2 | Discontinued by Manufacturer
9 Review
SHIDU Bluetooth Voice Amplifier: 18W Waterproof Speaker with Wired Microphone Headset - Portable Rechargeable PA System, Power Bank for Outdoors, Teachers, Shower, Beach
3 Review
Experience Superior Sound Quality With SMSL Audio SAP-8 Headphone Amplifier In Black/Silver/Gold
5 Review
Amp Up Your Audio Experience With The Aimpire AD10 Mini USB DAC CSS XMOS XU208 ES9018K2M OPA2134 Audio Amplifier Decoder
10 Review
Kohree 36V To 12V DC/DC Converter Regulator - 10A 120W Golf Cart Voltage Reducer
17 Review
VINTAR EU To US Plug Adapter 3-Pack For Easy Travel: Europe To USA Converter For Spain, France, And More, Compatible With Type C/E/F Plugs - European To US Power Adapter Solution
11 Review
EXuby Digital Converter Box For TV With RF/Coaxial And RCA Cable For Recording And Viewing Full HD Digital Channels Free (Instant Or Scheduled Recording, 1080P HDTV, HDMI Output, 7 Day Program Guide)
12 Review
Dorhea LM2596 DC-DC Buck Converter Step-Down Regulator 4.0-40V To 1.25-37V DC 36V To 24V To 12V To 5V Volt Power Supply Module With LED Voltmeter Display Compatible With Car Motor Buck
16 Review