The amp - Auralic Taurus - is supposed to deliver 3.5 watt in 32 ohm... Available from feb 2012
Here's a large pic.
Taurus got a pretty good review over at 6moons, here from the conclusion :
Final words. AURALiC's Taurus follows the excitement of their ARK MX+ converter. As a high-power headphone amp it drives HifiMan's toughest HE6 to perfection. It'll thus power any commercial headphone on the market. In the general sonic vein of Burson Audio's HA160 with resolution the next level up plus greater top-end brilliance and an overall higher degree of sophistication, the Taurus is a top-flight headfi/preamp whose strategic dry warmth is sourced from high class A transistor bias. It stays clear of valve darkness and moisturization and becomes an iron first in a velvet glove for cans and amplifier input stages alike. Its noise floor isexceptionally low, and its 4.5wpc/32Ω power very butch for the breed. Once again team AURALiC demonstrates a high level of circuit design know-how. Hats off!
Don't know how good the amp is but I've been using the DAC for a good 6 months now and only recently upgraded to a lampizator level 5 for the tube output stage and inbuilt volume. As a standalone dac, not many that i've tested came close.
There is an audible difference, with the LCD-3/ HE-500 I found the sound a bit smoother in standard (STD) mode.
The Taurus delivers way more wattage in standard mode than balanced in the lower impedance ranges (where you actually need the power - read orthos...):
.............STD Mode.......BAL Mode
The numbers made me curious. From Auralic (email)
The power in chart are continous RMS.
For your first question, there are four output sections in each Taurus amp. In STD mode, each two of them are in parallel driving one channel. It will well suite low impedance as the output current is plenty but the output power driving high impedance is limited by maximum swing voltage. In BAL mode, two section are in bridged connection(BTL), it will offering 2x maximum swing voltage so the output power at high impedance is four times higher, but at low impedance, since each section is bear half load which equal to 16ohm, the output is limited by output current. I hope this will help.