Elberoth2 - jus shortly
9. "Use steep low pass filters to limit the upper high frequency range, partially negating the purpose of wider bandwidth, e.g. SACD, source material while resulting filter phase shifts may be audible in the working band"
Don't know what he means - Icepower has 65kHz bandwidth (-3dB) and typical phase shift at 20kHz.
10. "Have input circuits which are highly susceptible to higher frequency input signals including upper band noise shaper noise and DAC artefacts, and which then contribute to poor treble sound"
Why input circuit are more susceptible ti higher freaquency - I don't know.
11. "Have output circuits with poor high frequency resolution resulting in high levels of intermodulation products at the high frequency end of the spectrum"
Resolution is unlimited (analog) and IM distortions for my Rowland are 0.0005% at 10W 4 Ohm 14kHz/15kHz. How many other amps can do that?
12. "Have 'sampler' noise shaped noise floors which vary dynamically with the level frequency and complexity of the input signals"
I don't understand this language - what samplers is he talking about in analog modulator?
13. "Have comparatively small power supply reservoirs, in the light of their low frequency output current potential"
My Icepower being smallest of the series has peak current 11A. Larger 201 has 20A and largest 501 has about 50A.
14. "Have thermal dissipation limitations due to the small power module size which means that thermal dynamic variations are present in the performance with time"
Nonsense - my amp dissipates abot 5W and runs completely cold. Output switchers (Mosfets) have close to zero resistance when "ON" and switch within nanoseconds - not much power dissipated there (even no heatsinks).
15. "To protect the fragile output stages all kinds of pre-clip, and aggressive fold back protection regimes are included which are frequency dependant and are also programmed for duty cycle"
Again - tossing terms. Output is more robust than traditional amps having strong Mosfets in H-Bridge and all sorts of protection. Foldback protection is used only in linear regulated supplies (not used in amps for output power). Someone was testing Icepower at full power with music, sinewave and noise for many hours - found them to be exceptional. I can find it if you want.
16. "Operate at an equivalent sample rate which is insufficient for good resolution above 7kHz. DSD 1 bit pulse-width modulation operates at 2.4MHz, nearly ten times the rate used in Class D amplifiers"
It does not sample anything and has unlimited resolution at any frequency (it is analog). Has bandwith limit of 65kHz because of 0.5MHz carrier. 2.4MHz he mentiones or 2.8 MHz with SACD has different purpose (sampled system Nyquist - there is no DAC here)
17. "Deliver high constant DC voltages relative to local ground (up to 70V) at the output terminals (of course not between the +,- terminals) and hence the loudspeaker connections and cable"
DC voltage on output of my amp is under 1mV. What he means by "High Constant DC Voltage"? I don't know terms like that. This is garbage - believe me
9. "Use steep low pass filters to limit the upper high frequency range, partially negating the purpose of wider bandwidth, e.g. SACD, source material while resulting filter phase shifts may be audible in the working band"
Don't know what he means - Icepower has 65kHz bandwidth (-3dB) and typical phase shift at 20kHz.
10. "Have input circuits which are highly susceptible to higher frequency input signals including upper band noise shaper noise and DAC artefacts, and which then contribute to poor treble sound"
Why input circuit are more susceptible ti higher freaquency - I don't know.
11. "Have output circuits with poor high frequency resolution resulting in high levels of intermodulation products at the high frequency end of the spectrum"
Resolution is unlimited (analog) and IM distortions for my Rowland are 0.0005% at 10W 4 Ohm 14kHz/15kHz. How many other amps can do that?
12. "Have 'sampler' noise shaped noise floors which vary dynamically with the level frequency and complexity of the input signals"
I don't understand this language - what samplers is he talking about in analog modulator?
13. "Have comparatively small power supply reservoirs, in the light of their low frequency output current potential"
My Icepower being smallest of the series has peak current 11A. Larger 201 has 20A and largest 501 has about 50A.
14. "Have thermal dissipation limitations due to the small power module size which means that thermal dynamic variations are present in the performance with time"
Nonsense - my amp dissipates abot 5W and runs completely cold. Output switchers (Mosfets) have close to zero resistance when "ON" and switch within nanoseconds - not much power dissipated there (even no heatsinks).
15. "To protect the fragile output stages all kinds of pre-clip, and aggressive fold back protection regimes are included which are frequency dependant and are also programmed for duty cycle"
Again - tossing terms. Output is more robust than traditional amps having strong Mosfets in H-Bridge and all sorts of protection. Foldback protection is used only in linear regulated supplies (not used in amps for output power). Someone was testing Icepower at full power with music, sinewave and noise for many hours - found them to be exceptional. I can find it if you want.
16. "Operate at an equivalent sample rate which is insufficient for good resolution above 7kHz. DSD 1 bit pulse-width modulation operates at 2.4MHz, nearly ten times the rate used in Class D amplifiers"
It does not sample anything and has unlimited resolution at any frequency (it is analog). Has bandwith limit of 65kHz because of 0.5MHz carrier. 2.4MHz he mentiones or 2.8 MHz with SACD has different purpose (sampled system Nyquist - there is no DAC here)
17. "Deliver high constant DC voltages relative to local ground (up to 70V) at the output terminals (of course not between the +,- terminals) and hence the loudspeaker connections and cable"
DC voltage on output of my amp is under 1mV. What he means by "High Constant DC Voltage"? I don't know terms like that. This is garbage - believe me