Since 2009, what started out as Audio Line Out and is now ALO audio has been producing excellent niche audio cables. In particular, it has developed and produced replacement and audiophile-quality upgrade cables for in-ear monitors. Any IEM which uses industry standard MMCX connections can benefit from ALO audio cables.
In addition, ALO audio produces portable and desktop amplifiers for headphones and earphones, and a portable DAC/headphone amplifier.
ALO audio is based in Portland, Oregon. After several years of operation, ALO audio founder Ken Ball started up Campfire Audio, now known for producing some of the finest in-ear monitors on the market.