NwAvGuy ให้เหตุผลที่เลือกตัวนี้(และไม่เลือก 32 bit )ไว้ดังนี้ครับ
THE DAC CHIP: As I’ve explained elsewhere you can get transparent performance from most of the better DAC chips on the market from a half dozen chip vendors. What’s most important is choosing one that’s best suited to the particular application. In this case, that means running from a single 5 volt USB power supply, having a buffered voltage output (to avoid needing a single-supply op amp), and operating properly without using a microprocessor. Just those three requirements narrow the choices considerably. We chose the ESS Sabre ES9023 which is used in a lot of commercial designs (it’s an improved version of the popular ES9022). Unlike TI, Burr Brown, Analog Devices, etc, ESS specializes in audio chips and they did a nice job with the ES9023’s feature set and specs.
DIRTY LIES: Many popular “boutique” DACs (especially those being sold on eBay) mislead their fans by quoting only the chip specs for their entire DAC. Basically that amounts to cheating and lying. It further implies either the company is incapable of making the proper measurements or the real measurements were bad enough they didn’t want to share them. The implication is a DACs performance is solely determined by the chip used. But the opposite is usually more true. The implementation matters far more than the chip. the FiiO E10 is just one of many examples. The HA-Info I’ll soon be comparing to the ODAC is another.
32 bits is 99% marketing hype. There isn't a 24 bit audio ADC with true 24 bit (144 dB DNR) performance. There also isn't 24 bits of dynamic range in music (jackhammer at 1 inch away to absolute silence orbiting pluto). I understand about headroom, clipping, etc. but the best microphones you can buy are inferior to even 24 bit ADCs.
NwAvGuy ให้เหตุผลที่เลือกตัวนี้(และไม่เลือก 32 bit )ไว้ดังนี้ครับ
THE DAC CHIP: As I’ve explained elsewhere you can get transparent performance from most of the better DAC chips on the market from a half dozen chip vendors. What’s most important is choosing one that’s best suited to the particular application. In this case, that means running from a single 5 volt USB power supply, having a buffered voltage output (to avoid needing a single-supply op amp), and operating properly without using a microprocessor. Just those three requirements narrow the choices considerably. We chose the ESS Sabre ES9023 which is used in a lot of commercial designs (it’s an improved version of the popular ES9022). Unlike TI, Burr Brown, Analog Devices, etc, ESS specializes in audio chips and they did a nice job with the ES9023’s feature set and specs.
DIRTY LIES: Many popular “boutique” DACs (especially those being sold on eBay) mislead their fans by quoting only the chip specs for their entire DAC. Basically that amounts to cheating and lying. It further implies either the company is incapable of making the proper measurements or the real measurements were bad enough they didn’t want to share them. The implication is a DACs performance is solely determined by the chip used. But the opposite is usually more true. The implementation matters far more than the chip. the FiiO E10 is just one of many examples. The HA-Info I’ll soon be comparing to the ODAC is another.
32 bits is 99% marketing hype. There isn't a 24 bit audio ADC with true 24 bit (144 dB DNR) performance. There also isn't 24 bits of dynamic range in music (jackhammer at 1 inch away to absolute silence orbiting pluto). I understand about headroom, clipping, etc. but the best microphones you can buy are inferior to even 24 bit ADCs.