Valhalla is a Class A, single-ended triode headset amplifier with no general feedback and noninverting circuit topology. It supplies timeless tube noise and can drive headphones with impedances as low as 32 ohms.
Yes, we know that you left the preceding paragraph is probably, "Timeless tube noise." And if you're not a tube addict, you might not even know what that means. Some individuals say tube noise is a smoky bar with a hot chick in a red dress, it's a warm pool in summertime, glowing green versus the purple golden, it's a. well, hell, you can't really describe tube noise. Think "smooth, fluid, liquid, alive." However not in a SF-movie-gonna-eat-you kinda method.
All Tube, All The Time
The only active devices in the audio signal course in Valhalla are tubes. The 6N1P triodes input supplies linear, low sound voltage gain. The 6N6P triodes offer excellent power output ability for a wide variety of high-impedance headphones (though, if you're taking a look at orthos, check Mjolnir, Lyr and Asgard instead.).
High Quality Components.
Do not compare Valhalla to cheap tube amps making use of open-frame carbon pots and low quality parts. Compare it to tube amps making use of Alps Blue Velour pots, Dale resistors, Wima capacitors, and other top-end elements. Also consider that Valhalla has virtually 2,000 uf of filter capacitance in its large power supply, for exceptional performance.
Single-Ended Triode OTL Headphone Amplifier
High Quality Parts Don't compare Valhalla to cheap tube amps using open-frame carbon pots and substandard parts. Compare it to tube amps using Alps Blue Velvet pots, Dale resistors, Wima capacitors, and other top-end components. Also consider that Valhalla has almost 2,000uf of filter capacitance in its oversized power supply, for superior performance.
All Tube, All The Time The only active devices in the audio signal path in Valhalla are tubes. The 6N1P triodes input provides linear, low noise voltage gain. The 6N6P triodes provide good power output capability for a wide variety of high-impedance headphones (though, if you're looking at orthos, check Mjolnir, Lyr and Asgard instead.)