Product Description

ALO Audio – Studio Six

 

The ALO Audio – Studio Six circuit is a class-A single-ended triode (SET) with zero feedback and 100 percent tube amplification, designed to resolve fine musical details, present an expansive soundstage, and provide lush tonal quality. In this design, only vacuum tubes with the highest reputation for sonic virtue are used.

These tubes will remain available in the global audio market. The power supply uses vacuum tube rectification and is designed as a “virtual dual monoblock.” Filtering for the Left and Right input stages consists of two glow discharge regulator tubes, as well as separate multi-stage filtering for each Left and Right Channel output tube.

The Studio Six is expressly designed for headphones and can power multiple pairs of headphones without sacrificing fidelity, making it an ideal amp for group listening sessions. 

A proprietary output stage easily accommodates a wide range of headphone impedances ranging from 8 to 600 Ohms. The ‘overbuilt’ power supply has a strong multi-stage high-voltage filtering system for excellent low-frequency performance.

The Studio Six circuit is a Class-A Single-Ended Triode (SET) design. Zero-feedback and all-tube amplification.

 

Built For Life

Uncompromising build and design quality. Part ratings and circuit design should be conservative. This translates to less-stressed operation, longer tube life, and long-term amplifier reliability. A piece of audio equipment that will not become obsolete. A classic design that will last a lifetime.

 

Reference Amplification

Design of a Class-A Single-Ended Triode (SET) circuit with no feedback and 100 percent tube amplification. Designed for fine musical detail resolution, expanded soundstage presentation, and lush tonal quality.

 

Totally Tubes

Only vacuum tubes with proven sonic virtues are used in this design. Choosing tubes that are currently and will remain available in the global audio marketplace.

 

ALO Audio – Studio Six Pure Power

A “Virtual Dual Mono Block” power supply is used. Vacuum tube rectification is used. Filtration for the left and right input stages, as well as two glow discharge regulator tubes In addition, each left, and right channel output tube, has its own multi-stage filtering.

 

Designed for Headphones

A proprietary output stage easily accommodates a wide range of headphone impedances ranging from 8 to 600 ohms. The Studio Six can power multiple pairs of headphones without sacrificing fidelity. The ideal amplifier for group listening sessions.

 

Final Thoughts about ALO Audio – Studio Six

The combination is simply intoxicating. It may be a little overkill for the easier-to-drive LCD-X, but it sure sounds great. The more demanding LCD-3, on the other hand, absolutely thrives with the quality power that the ALO Studio Six provides. Don’t get me wrong: the ALO also does an excellent job with the HiFiMAN HE-6.

It has plenty of power, allowing the HE-6’s detailed low end to come to life. You can’t go wrong with these combinations. ALO has successfully created a lifetime tube headphone amp that produces sweet, sensual music for the ears.

 

ALO Audio – Studio Six Specifications

 

Colour	Black, Silver
Headphone 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
Fuses	100/110/120 = 1.25 Amp / 250 Volt 220 / 240 = 6.30 Amp / 250 Volt