Dear Respected Customers, Glad to tell you that the RC-SE1B will be officially replaced by the RC-MMCXB with some upgrades. After the release of RC-SE1B, we received many favorable feedbacks as well as suggestions. In order to make it compatible with more earphones, we hereby announce the discontinuance to the RC-SE1B and upgrade to the new RC-MMCXB. Check out the introduction of RC-MMCXB by below pictures or >>Click Here The delivery of RC-MMCXB to our worldwide agents starts this week. If you are considering about getting one, you can kindly check with local agents (>>Where to Buy) for its availability. Best Regards FiiO Electronics Technology Co.,Ltd.