- Compact 4-channel stereo headphone amplifier can be used for up to four headphones at the same time for simultaneous listening of main mix with separate volume control. Please allow 0-1cm error due to manual measurement. Please make sure you do not mind before you order. Thank you for visiting Rosboutique! All our items are shipped from China. We do our best to ship out packages as quickly as possible. Confirmed orders are processed and prepared within 24-48 hours. The tracking number may not be immediately available but will be uploaded as soon as it is. We kindly ask for your patience. It is taking an average of 15-25 days for packages to arrive in most major cities. Although eBay estimates longer delivery time, that is very often not the case and is usually a lot more sooner. Please.
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