GEAR REVIEW
HERITAGE AUDIO O. H. M. HEADPHONE AMP | Steve Sattler
KEY FEATURES
• The first headphone amp designed to let you match the amplifier’ s output to the specific impedance of your headphones.
• Includes balanced, unbalanced( RCA), and a pro-quality Bluetooth input with a Burr Brown DAC.
• Alps“ Blue Velvet” potentiometer gives very smooth, reliable output level adjustment with no crackle or jumps.
• Dual headphone jacks( 6.35 mm and 3.5 mm) mean you can plug in almost any headphone without adapters.
• The stereo quarter inch balanced outputs let you chain units or pass the signal onto your studio workflow.
• Helps ensure consistent, detailed, headphone reproduction across multiple playback systems.
Heritage Audio’ s O. H. M. Amp is designed not as another utilitarian headphone amp, but as a monitoring tool designed with the kind of fidelity and control traditionally reserved for top-tier studio environments. As ministries lean into silent stages, in-ear monitoring, livestream production, satellite campuses, and volunteerdriven tech teams, the accuracy of what gets delivered through a pair of headphones or IEMs directly shapes everything from musical confidence to mix decisions.
Picking up the Heritage Audio O. H. M. Headphone Amp the high-level build quality is immediately apparent. It feels like something you wouldn’ t hesitate to move around to different mix stations on a Sunday morning. On the front panel, both ¼-inch and 3.5 mm headphone jacks are available simultaneously, which avoids the last-minute adapter scramble that tends to happen during midweek rehearsal when a volunteer shows up with consumer headphones while a worship leader plugs in a pair of high-impedance studio cans. The oversized Alps“ Blue Velvet” volume knob sits at the center of the interface and offers the kind of smooth, precise resistance that invites careful level adjustments. Anyone who has ever tried to dial in the right monitoring level between spoken prayer, soft pad beds, and a full band swell will appreciate the Alps“ Blue Velvet” tactile accuracy.
On the back, balanced XLR / TRS inputs let you feed the amp directly from a console’ s cue mix, a front-of-house matrix send, or a studio interface. The unbalanced RCA input offers compatibility with playback decks, older mixers, or volunteer-operated rehearsal rigs. There’ s also a Bluetooth input backed by a
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