tutetibiimperes
100+ Head-Fier
The Susvara for me is mysterious. On paper, it shouldn’t require so much. But collective ears couldn’t lie— they open up and sing out of speaker amps. The increased bass physicality is not just heard but literally felt on the cheek. I dunno what it is with the drivers that an even more powerful amplifier than what paper specs require is still able to squeeze out more out of the Susvara. I guess that’s why Hifiman created the EF1000 which is more powerful than sensible but is also the best you can hear the Susvara out of. So, as a Susvara owner, I definitely welcome the GT’s power output that’s higher than what seems necessary.
I think the difference comes down to power supply and capacitor/power reserves.
Speaker amps need to be able to deliver more power more quickly than headphone amps typically do, so they have much larger power supplies, capacitors, etc, so that they can motivate a tower with 3 10” woofers to hit a 30hz bass note at 110db at a moment’s notice.
While headphones use a fraction of the power that speakers do, even exceptionally inefficient headphones like the Susvara, I think they can still take advantage of those deeper current reserves and ability to deliver extra power more quickly. You may only be using milliwatts the vast majority of the time, but when it comes to bass if the headphone needs a sudden surge of power, a speaker amp or overbuilt headphone amp with a very robust power delivery system can do it better.
I noticed an increase in bass slam and performance on my HE6se when I upgraded from a Massdrop THX 789 to a Schiit Ragnarok 2.