HK Higher Knowing, LLC
Large 440Hz 26-Note Two Octave C3-C5 Thetazen Shruti Box
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Large 440Hz 26-Note Two Octave C3-C5 Thetazen Shruti Box with Carry Case
• Size: 16.25" x 12.5" x 3.5"
• Average weight: 3810g
• Scale: Third Octave and Fourth Octave 26-Note C3-C5
• Includes: Carrying Case
This is the large two-octave model in our Thetazen Shruti Box lineup, tuned to 440Hz with a full 26-note range spanning two octaves from C3 to C5 (covering the complete chromatic scale across both octaves, plus the upper C). The extended range opens up significantly more tonal flexibility than the single-octave models, letting the player build richer harmonic beds, support a wider range of vocalists, and shift between lower grounding tones and higher carrying tones within the same instrument. This makes the two-octave box especially well suited to practitioners who work with multiple singers, sound therapy sessions where the drone needs to move between root and upper-register tones, kirtan and devotional music with shifting keys, and recording or performance settings where one instrument needs to cover what would otherwise require two. The larger body also delivers the fullest, most resonant voice in the lineup, with deep bellows capacity and strong projection that carries through larger rooms and group settings without losing presence. Crafted from solid teak with metal corner reinforcements and a polished finish, the box is built to hold its tone and travel well for years of regular use.
The shruti box has its roots in the classical music traditions of India, where it evolved as a portable hand-pumped reed instrument designed to hold a steady drone behind vocalists and other musicians. Its name comes from the Sanskrit word shruti, meaning "that which is heard," a term that in Indian musical theory refers to the smallest perceptible interval of pitch and to the foundational tones around which raga melodies are built. Historically, the shruti box replaced the older tanpura in many traveling settings, since it offered the same continuous drone in a far more compact and durable form. Today the instrument is used well beyond its classical origins, finding a place in sound therapy, meditation, kirtan and devotional singing, yoga and chanting practice, songwriting, and any setting where a sustained, breathing drone is needed to anchor voice or melody.
Please note that the Thetazen Shruti Box is handcrafted from solid wood by skilled artisans, and small variations from instrument to instrument are a natural part of that process. Differences in wood grain, color, finish tone, and small variations in the hardware placement are normal and expected, and may differ slightly from the photos shown. Each box is tested and tuned before shipping, but because reeds are hand-set, very subtle character differences in tone and bellows response are part of what makes each instrument unique rather than identical to the next. These small variations are not flaws but the signature of a handmade instrument made the traditional way.
