[super kermit]

Headphones
Beyerdynamic DT770 250 ohms
Sennheiser HD 6XX 300 ohms
HiFiman HE4XX Planar Magnetic 35 ohms

PC gaming
Soundblaster AE-7
Headphone Amp (600Ω): Custom-designed discrete headphone bi-amp (Xamp)
Output Impedance: 1 Ω
Headphone Impedance Range: 16 – 600Ω
Output Impedance: 1Ω
Supported Headphone Impedance: 16 - 600Ω
IEM: 16 -31Ω (1.9Vrms, -5.5dB)
Normal: 32 - 149Ω (3Vrms, -1.6dB)
High Gain: 150 - 600Ω (5.3Vrms, +3.3dB)

HTPC movies
Soundblaster X3
Output Impedance: 10 ohms
Supported Headphone Impedance: 32 ohm - 600 ohm
Low Gain: 32 - 149 ohm (1.2V RMS @ 32 ohm, 1.5V RMS @ 150 ohm
High Gain: 150 - 600 ohm (2.3V RMS @ 150 ohm, 2.9V RMS @ 600 ohm

SCHIIT HERESY
Maximum Power 16 ohms 2.8W RMS per channel
Maximum Power 32 ohms 2.4W RMS per channel
Maximum Power 50 ohms 1.6W RMS per channel
Maximum Power 300 ohms 410mW RMS per channel
Maximum Power 600 ohms 215mW RMS per channel

Will buying a new SCHIIT stack add any value, especially if I am NOT listening to music?
Magni Heresy and Modi 3

 

[gimmeheadroom]

The 250 ohm Beyers and 300 ohm Sennheisers do need an amp to sound their best. I would not recommend entry level schiit any more than chifi though and probably less.

 

[super kermit]

The X3 and AE-7 both have DAC and amps.

 

[gimmeheadroom]

The X3 and AE-7 both have DAC and amps.

That does not mean that the headamp section in the XE and AE-7 are automatically ok for Sennheisers and Beyers.

 

[super kermit]

Good point, I added the specs in to the Original Post.

Note, this is only for gaming and movies still.

 

[gimmeheadroom]

No useful info from the AE-7. X3, definitely not enough voltage.Heresy, also marginal for quality music out of the DT770 and 6XX.

Bottom line, if you are happy with the sound, do nothing. If you feel you're missing something, don't get entry level schiit gear. Chifi at the same price is a much better value. And also not clear that entry level schiit itself is not chifi...

 

[corgifall]

Schiit stack with the heresy will sound more analytical and lean. Would be better for gaming(competitive) or movies. Replace the heresy with the new normal magni if possibly looking for a warmer sound. A dedicated DAC is always recommended but for gaming and music its kinda a personal preference. If you have a decent onboard audio card already then I would say start with the amp first.