Audio Primate made a review for Sendy Audio Aiva
"The SendyAudio Aiva is stunning value at its price. The gorgeous wood cups, shimmering copper cable, refined leather case and impeccable coordination of all elements of its build screams quality at a much higher price level than $599. The tuning leans towards the upper mids and the treble, but doesn’t push back the heart of the mids nor the bass. The bass is extended and textured, but sounds less emphasised relative to the emphasis in the upper mids and treble. These are not rumblers or thumpers, but they present excellent bass texture and good extension. If you are looking for a pair of headphones to rock to guitar, percussion or violins, these will do well. Given that I could drive these off my phone and could not find any fault with the build quality or accessories, I have no choice but to give these a 5 in build, usability and value. The sound quality is also very solid on these. I recommend these wholeheartedly."
Read more: https://audioprimate.blog/2019/11/11/sendyaudio-aiva-review-luxurious-and-energetic/