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Stellar S300 Stereo Amplifier

300 watt dual mono Analog Cell power amplifier

Built in Boulder

Breathe new life into your loudspeakers with the Stellar S300, one of the most extraordinary under $5,000 stereo power amplifiers ever crafted. The S300 combines the slam, linearity, and toe-tapping pacing of a Class D output stage with the warmth, grace, and rich inner detail of Stellar’s Class A Analog Cell. The results are nothing short of ground breaking. Liberate a wealth of untapped energy trapped in your media library. Plumb music’s subterranean depths and finally hear the bass your speakers were capable of. Revel in rich layers of fine, full detail. Marvel at the deep, extraordinary, wall-to-wall soundstage. Effortless. Lush. Stellar.

Stellar S300 Stereo and M700 Mono

Unit Weight13 lbsUnit Dimensions17” x 3” x 12” Chassis only. 13" deep including connectors.Shipping Weight16.5 lbsShipping Dimensions22”x 8” x 17”Color OptionsBlack
SilverVoltage Options
Factory set onlyJapan 100V
North America 120V
Europe/Asia/Australia/New Zealand 230VMains Power InputsIEC C14Accessories IncludedUS (NEMA 5-15P) (all versions)
Schuko (CEE7/7) (230V version)
UK (BS 1363) (230V version)Audio InputsRCA (Unbalanced)
XLR (Balanced)Speaker Outputs S300Copper base nickel plated binding posts (2 pair per channel)Speaker Outputs M700Copper base nickel plated binding posts (2 pair)OtherDC Trigger Input 
3.5mm 5-15VDCWarranty3 years parts and labor

Signal

Gain30.5dB +/-0.5dBSensitivity for rated output power1.01VNoise1kHz@300 Watts <-100dBInput impedance S300Unbalanced 50KΩ
Balanced 100KΩInput impedance M700Unbalanced 50KΩ
Balanced 100KΩOutput Impedance50Hz, 2.8VRMS <0.007ΩDamping factor50Hz. 2.8VRMS
8Ω >1100
4Ω >550Frequency [email protected] 
10Hz – 20KHz +/- 0.5dB 
10Hz – 50KHz +0.1/-3.0dB

THD&IM

1KHz, 1W/4Ω<0.02%10-20KHz, 1W/4Ω<0.02%10-50KHz, 1W/4Ω< 0.05% (90kHz BW)1KHz, 37.5W/4Ω< 0.01%

S300 Stereo Amplifier

Output Power

Both channels driven 120vac mains, 1kHz, 1% THD8Ω140W minimum4Ω300W minimum2ΩStable for musical transients

M700 Mono Amplifier

Output Power

120vac mains, 1kHz, 1% THD8Ω350W minimum4Ω700W minimum2ΩStable for musical transients

NO returns are accepted on new and used
equipment