die Kopfhörerboutique

ALO Studio Six

4999 EUR / In stock.

Ships usualy within 4 weeks.


Built For Life

Uncompromising quality in build and design.  Conservative part ratings and circuit design.
Translates into effortless, under-stressed operation, extended tube life and long-term amplifier reliability.
An obsolescence-proof piece of audio equipment, a timeless design built to last a lifetime.

Reference Amplification

Class-A single-ended triode (SET) circuit design with zero-feedback and 100% tube amplification.
Designed for resolution of fine musical details, expansive soundstage presentation, and lush tonal quality.

Totally Tubes

Only vacuum tubes with established reputations for sonic virtue are in this design.
Selecting tubes that are now and will continue to be available in the global audio marketplace.

Pure Power

The power supply is a “virtual dual mono block” design.
Featuring vacuum tube rectification.
Filtering for the Left and Right input stages, including two glow discharge regulator tubes.
And separate multi-stage filtering for each Left and Right Channel output tube.

Designed For Headphones

A proprietary output stage accommodates a wide range of headphone impedance from 8 to 600-Ohms, with ease.
The Studio Six drives many pairs of headphones with no sacrifice to fidelity.
eadphone impedance compatibility range:
8 Ohms to 600 Ohms
Maximum rated output power: 
1,000 milliwatts into 8 to 32 Ohms
Amplifier input impedance:
95k-Ohms
Amplifier input Voltage for full-rated output voltage into various headphone impedances:
1.00V RMS input for 4.0V RMS output into   16 Ohms
1.30V RMS input for 5.7V RMS output into   32 Ohms
1.70V RMS input for 7.5V RMS output into   75 Ohms
1.85V RMS input for 8.3V RMS output into 150 Ohms
1.70V RMS input for 8.2V RMS output into 300 Ohms
1.65V RMS input for 8.1V RMS output into 600 Ohms
THD+N (1kHz input) at 1V RMS output into stated load impedances:
32 Ohms: 0.26%
150 Ohms: 0.12%
THD+N (1kHz input) at 250 milliwatts output into stated impedances:
 32 Ohms: 1.0%
150 Ohms: 2.0%
Frequency Response -3dB (Referenced to 1kHz, 250 milliwatts output) into stated impedances:
 32 Ohms:   6.0Hz to 39kHz
150 Ohms: 16.5Hz to 36kHz
Frequency Response -1dB at full-rated (2.83V RMS) 1,000 milliwatt output into 8 Ohms:
15Hz to 20kHz
 S/N Ratio:
78dB (unweighted) below full 2.83V RMS output into 8 Ohms