NEW in sealed box. Alto RSA 27 realtime spectrum analyzer — 27 bands, 1/3-octave, 40Hz–16kHz, built-in pink noise generator, XLR mic input w/ phantom power. Essential for room tuning and live sound. Originally retailed for ~$280. Miami pickup or shipping.

Full description:
Brand new, factory sealed Alto Professional RSA 27 — a 27-band 1/3-octave realtime spectrum analyzer in a 1U rackmount. Originally retailed for around $280. Essential tool for live sound engineers, install techs, and home studios doing room tuning.

Features:
27 bands at 1/3-octave ISO centers, 40Hz – 16kHz spectrum display
7 LED indicators per band for precise visual readout
Switchable ±3dB or ±6dB resolution per LED (display range -24dB to +15dB)
Built-in pink noise generator — no need for external reference CDs or software
XLR microphone input with switchable +48V phantom power
Balanced XLR AUX/MIC input
1/4" TRS unbalanced line input
1/4" TRS pink noise output (link to mixing console)
Balanced XLR + 1/4" TRS outputs
1U 19" rackmount / Weight: 6.8 lb

Ideal for: ringing out monitor wedges, tuning PAs, room EQ analysis, identifying feedback frequencies, install verification.

Condition: Brand new, factory sealed, original box. Guaranteed working on arrival.