DIY version up DIY 846 12BA ver. ▲ The photos are of the actual product. ● Unlike resellers, we offer a thorough warranty. We can handle repairs, exchanges, fine-tuning, and custom configurations! The internal components are not Chinese-made BAs, but original KNOWLES units. Detailed Configuration: High Frequency: TWFK-30017 x 2 Mid Frequency: ED-29689 x 2 Low Frequency: CI-22955 x 2 While the SE846 has 4 drivers, this one has 6 BAs, so the low frequencies, which were a challenge, are reproduced cleanly across the entire range. The high frequencies are handled by the well-regarded TWFK, resulting in a clear and brilliant sound quality. You'll hear sounds you couldn't hear before, with a lot of sound information, and a wide soundstage... The high-frequency extension, brilliance, and tight bass are all highly praised. The price is also lower because there is no brand premium from the manufacturer. Aging for about 50-100 hours is recommended. It can be sufficiently driven by a regular Hi-Res smartphone, DAP, or computer. The performance can be further enhanced by using a portable amplifier. This product is not an SE846. In my subjective opinion, I definitely recommend this over the SE846 in terms of cost performance. SHURE Shure SE215 SE315 SE425 SE535 SE846 In-ear monitors, monitors, UE weston JH, multi-driver monitor earphones shure se215 se535 se315 se425 ue900# Connection type: Wired/Wireless