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A reverberation unit (more commonly called a "reverb unit") is a device that makes audio sound like it is coming from a larger, more reverberant (echoing) room.

empty, vacant, bare, void, blank, barren, occupied, deep, sunken, concave, buldging, false, unreal,insincere, sincere, hungry, starved, famished, ravenous, empty, cavernous,deep-set, sunken, recessed,fistular, fistulate, fistulous,tubular, cannular, tubelike, tube-shaped, vasiform,reverberant

boom, bounce back, echo, reproduce,reverberate, ring, sound, vibrate, beating, booming, clangorous, consonant, deep,deep-toned, earsplitting, echoing, electrifying,emphatic, enhanced, forceful, full, heightened,intensified, loud, noisy, orotund,plangent, powerful, profound, pulsating, pulsing,reverberant, reverberating, rich, ringing, roaring,rotund, round, sonorant, sonorous, stentorian,strident, thrilling, throbbing, thundering,thunderous, vibrant

• adamant
• brilliantly
• decanter
• banter
• distantly
• reactants
• enchanting
• enchantment
• phantom
• defiantly
• dominant
• granted
• gallantry
• hydrants
• irritants
• instantly
• lantern
• mantle
• pleasantly
• pantry
• plantlike
• peasantry
• pleasantry
• pageantry
• planting
• slanted
• scantily
• shanty
• tarantella
• tarantula
• frantically
• vacantly