NuForce Icon IDO Headphone Amp/DAC/Preamp (Playback 56) Apple. Works great. Phone, apple cable and headphones not included. :) Includes stand and ac adapter. It’s not the original ac adapter but is same power output as the original (volts and amps). I’ve got two but only need one. It’s excellent for listening to headphones, especially those that require a little extra power to shine. Non-Apple smart phones, look elsewhere. It was designed for all iPhones. I have an iPhone 13 and it still works great. From an Absolute Sound review: In simple terms, the iDo is an Apple-compatible, 24-bit, USB Host Mode DAC (maximum resolution, 48kHz/24-bit), coupled with a simple but very high-quality desktop headphone amplifier. Two unexpected but welcome detail touches are that A) the iDo is compatible with—yet does not require—Apple’s option remote control, and B) the iDo DAC section not only provides the expected stereo analog audio outputs but also provides a coaxial S/PDIF digital output. The upshot of this latter feature is that, while the iDo can of course serve as a perfectly satisfying DAC/amp in its own right, it can also be used as a “bridge product” that can pass jitter-reduced digital audio signals from an Apple device on through to a much higher-end DAC, if desired.At the end of the day, though, the real reason to look into how much music from an Apple device can sound when you bypass Apple’s low-cost digital and analog audio circuits altogether, and let a much higher performance outboard DAC and amp handle the job. Readers will rightly ask if going to an outboard DAC/amp really makes all that big a difference (if, indeed, it makes any difference at all). The simple truth, as you’ll learn in this review, the iDo not only makes an audible difference; it makes a hugely audible difference that—once experienced—is pretty hard to resist.Consider this DAC/headphone amp if:•You want an affordable, sonically compelling USB Host Mode DAC that is geared specifically for use with a wide range of Apple devices.•You’d like an Apple-compatible DAC that not only has analog outputs, but also provides an S/PDIF digital output.•You also want an affordable headphone amp that works with a broad range of headphones and earphones.•You want to see just how much better the audio data stored on your Apple device can sound when you bypass Apple’s low-cost electronics and let a high quality DAC/amp shoulder the workload (trust us on this one; the difference is pretty darned shocking).Look elsewhere if:•You were hoping for a highly versatile multi-input DAC; this one provides a USB input specifically for use with iPods/iPhones, and iPads (i.e., it’s not a general purpose USB input).•You were hoping for a DAC with support for high-res 96/24 or 192/24 digital audio files; this one supports a maximum data rate of 48kHz at 24-bit resolution.Ratings (compared to similarly-priced DAC/amps)•Tonal Balance: 9.5•Clarity: 10•Dynamics: 10•Output Flexibility: 9.5•Value: 10