adydula
Headphoneus Supremus
- Joined
- Dec 14, 2010
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Either one would perform equally as well.
The reason I picked the Hersey over the 3+ is I already have a discrete Magni 3 and want to try the op amp version. Many do not pay attention to the actual chips or op amps used in and amplifier. I do.
The TI OPA1688's are in the SoundWise series of op amps designed especially to be used in headphones amplifiers.
OPA168x SoundPlus 36-V, Single-Supply, 10-MHz, Rail-to-Rail Output Operational Amplifiers datasheet
I Used these op amps in a DIY project several months ago and they are EXCELLENT op amps. World Class performance. These devices also offer wide bandwidth, fast slew rate, and high output current, Schiit took these op amps and utilized them in a neat manner.
Thank the high-quality op-amps used: OPA1662 for gain, OPA1688 for output—eight (8) OPA1688 stages per channel, for low output impedance and very high current capability. With these advanced parts (the OPA1688 even uses feedforward in its topology), we’re getting 6-8dB lower THD+N than Magni 3+, which is already 10-15dB lower THD+N than Magni 3.
I have a set of planars that like current and the Heresey does the job here quite well.
IMO this op amp, amp is not sterile like the THX series of amps have been reported to be like.
Alex
The reason I picked the Hersey over the 3+ is I already have a discrete Magni 3 and want to try the op amp version. Many do not pay attention to the actual chips or op amps used in and amplifier. I do.
The TI OPA1688's are in the SoundWise series of op amps designed especially to be used in headphones amplifiers.
OPA168x SoundPlus 36-V, Single-Supply, 10-MHz, Rail-to-Rail Output Operational Amplifiers datasheet
I Used these op amps in a DIY project several months ago and they are EXCELLENT op amps. World Class performance. These devices also offer wide bandwidth, fast slew rate, and high output current, Schiit took these op amps and utilized them in a neat manner.
Thank the high-quality op-amps used: OPA1662 for gain, OPA1688 for output—eight (8) OPA1688 stages per channel, for low output impedance and very high current capability. With these advanced parts (the OPA1688 even uses feedforward in its topology), we’re getting 6-8dB lower THD+N than Magni 3+, which is already 10-15dB lower THD+N than Magni 3.
I have a set of planars that like current and the Heresey does the job here quite well.
IMO this op amp, amp is not sterile like the THX series of amps have been reported to be like.
Alex