April Music Stello S100 MKII Amplifier - Open Box

Special Price $729.99 Regular Price $1,200.00

Sold Out & Discontinued.

The humankind requires advancement. If you want to improve your audio-life, glimpse into the stello HP100 / S100 MKII by April Music.

The renowned stello 100 is reborn as the MKII series after five years of slumber. During its absence, April Music has been dedicated to designing the next generation of high-performance series. Your choice of discretion is the stello HP100 / S100 MKII series.

Stello S100 MKII / HP100 Review - Jan. 2017


The chassis design of audio devices reflects largely on the musicality and human emotion. Alex Rasmussen, a celebrated and illustrious designer, created stello HP100 / S100 MKII enclosure by applying his design trademark of artistry and refinement.

Components / Workmanship

Discrete and superior circuit designs mirror the exact sum of their parts. The high fidelity of HiFi is based on the purity and fidelity of applied componentry. The stello HP100 / S100 MKII utilize such premium materials.

Musical life is based on attaining the gratification of all human senses. Hearing is essential, but touching and feeling are just as significant.

Advanced circuitry and attractive chassis are reflected in refined and dedicated workmanship. The MKII casing is superbly constructed in Santa Barbara, California, revealing the beauty and solidity of fine craft and conjuring the anticipation of sophisticated sound. The stello HP100 / S100 MKII are the culmination of such devotion.


The mastery of April Music lies in fine tuning of reproduced sound. The stello MKII is characterized by balanced, natural and pure sound and finely detailed musicality. Big orchestral music is portrayed of delicate violin to thundering Tympani.

From Strings to Brass to Vocals to Electronic instruments, the stello HP100 / S100 MKII series will deliver the dynamics of live sound and transport you to the haven of music.

Product Reviews

Line Inputs

1 pair of unbalanced input
1 pair of balanced input

Input Impedance

68 kOhms

Speaker Output

1 pair

Power Output

50 Watts / Ch at 8 Ohms

Frequency Response

10 Hz ~ 45 kHz

Signal to Noise

10 Hz ~ 20 kHz, -100 dB
THD+N : 0.002%, at 10 Watts

Power Transformer

specially built toroidal


8.6 × 2.12 × 11 inch (WHD), 219 × 54 × 296 mm (WHD)

Weight (NET)

8.82 lb, 4.37 Kg

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