64 AUDIO A18 TZAR $3,000 REVIEW
May 30, 2017 Comments Off on 64 AUDIO A18 TZAR $3,000 REVIEW
“The M20 offers a straight -20dB of noise isolation using the APEX technology and the M15, which 64 Audio are pitching as the middle ground between bass attenuation and isolation. The M15 features a combination of dual ambient ports and modified internals to achieve -15dB isolation at 350Hz and an additional 4dB cut at 20Hz to achieve that compromise.”
Audiophilepure 
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