All the best products. audio line-in, Dayton Audio has taken the technology developed for the Sonic Impact 5066 and perfected it in this hand-held digital amplifier. The input impedance depended both on frequency and on the setting of the volume control. With a portable CD player, you can use it to power a HiFi rig anywhere. Sonic Impact - amplifier overview and full product specs on CNET. Fig.3 Sonic Impact Super T, small-signal 10kHz squarewave into 8 ohms. Fig.6 Sonic Impact Super T, 1kHz waveform at 2W into 4 ohms (top), 0.108% THD+N; distortion and noise waveform with fundamental notched out (bottom, not to scale). Home of the SuperEar® 1-800-247-5548 The Sonic Impact T-amp weighs little more than a pound and will fit in the palm of your hand. As with all amplifiers that use a switching output stage, examining the Sonic Impact's distortion performance was complicated by the presence of RF energy in its output. speakers output. This little sucker is an integrated, 10 watt/channel (in 8 ohm) integrated amplifier. Peculiarly, the Super T is more linear at low frequencies into low impedances than it is into high ones (fig.5). But with a 1kHz sinewave at the same power into the same load, again with the 30kHz low-pass filter in front of the analyzer's input (fig.9), the third is now the highest-level harmonic, at –66dB (0.05%), and some high-order components can be seen, correlating with the spikes seen in the waveform graph. 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View cart for details. Yes, that is a $30 amp outperforming a well-reputed $350 integrated amp. The second harmonic is the highest in level, at an excellent –83dB (0.007%), with the third and fifth harmonics lying at –90dB (0.003%). The output impedance was a moderately high 0.35 ohm at 20Hz and 1kHz, rising to a very high 5 ohms at 20kHz, the latter due, I imagine, to the series low-pass filter used to prevent ultrasonic switching noise from being radiated from the speaker wires. Then I had an epiphany. short circuit protection, These graphs were all taken with the volume control wide open; there were no significant changes in response at lower settings. Fig.4 plots the percentage of THD+N in the Sonic Impact's output against output power in watts, taken without the low-pass filter. If you need a permanent power solution for … Fig.1 Sonic Impact Super T, frequency response at 2.83V into (from top to bottom at 2kHz): simulated loudspeaker load, 8, 4, 2 ohms (0.5dB/vertical div., right channel dashed). California Audio Labs Tercet Mk.III CD player, Analog Corner #294: TechDAS Air Force One Premium turntable & Graham Engineering Elite tonearm, Gramophone Dreams #41: Auris Nirvana headphone amplifier & Focal Stellia Casque de Musique headphones, Jonathan Weiss: Oswalds Mill Audio & Fleetwood Sound Company, NAD Masters Series M33 streaming integrated amplifier, Recommended Components: Fall 2020 Edition, Re-Tales #1: George Vatchnadze's Newest Gig, Acoustic Geometry Room treatments (before & after), My current and likely the last home audio setup, Fascinating wiev by Verity Audio Sarastro. But at its very affordable price, it should provide acceptable performance when matched to high-sensitivity speakers.—John Atkinson, Classé Delta Mono monoblock power amplifier, Pass Laboratories Aleph 0 monoblock power amplifier, Parasound Halo JC 1+ monoblock power amplifier, darTZeel NHB-468 monoblock power amplifier, Accustic Arts Audio Mono II monoblock power amplifier, Dynaco Stereo 120 transistor power amplifier, Verity Audio Monsalvat Amp-60 power amplifier, McIntosh Laboratory MC462 power amplifier. Intelligent short-circuit and over-temperature protection ensure amplifier longevity. Sonic Technology home the CMS MDS 3.0 compliant sound amplifiers, ultrasonic rodent repeller, EMF Detector and other quality products since 1981. over current protection, Switching in the low-pass filter smooths these spikes over (fig.7) but doesn't eliminate them, confirming that they are characteristic of the Sonic Impact, not the result of any unwanted interaction between the ultrasonic noise in the amplifier's output and my Audio Precision test set. Looking at the distortion content without the low-pass filter engaged, what appears to be subjectively innocuous third-harmonic content is overlaid with spikes that coincide with the signal's zero-crossing points (fig.6). Finally, the relatively poor HF linearity seen in fig.5 results in somewhat disappointing performance with the amplifier driving an equal mix of 19kHz and 20kHz tones into 4 ohms, even at a power level below visible waveform clipping (fig.10). Above 1kHz, however, the amplifier clearly has trouble maintaining its linearity into all loads. On the front there is a combined volume control and on/off switch on the front. Channel separation was excellent at almost 90dB in both directions at 1kHz, this decreasing (due to the usual capacitive coupling) to a still-good 70dB (L–R) and 62dB (R–L) at 20kHz (not shown). With the volume control set to 12:00, these rose to 19k ohms at low and midrange frequencies and 13k ohms at high frequencies. We delete comments that violate our policy, which we encourage you to read. The series output filter, however, will interact with the load impedance, and this interaction can be seen in fig.1, which shows the Super T's frequency response with the amplifier driving resistive loads ranging from 2 to 8 ohms, as well as Stereophile's standard simulated loudspeaker. For possible replacements or substitutions, please check the drop-down box below for a list of … Musical Fidelity M8xi integrated amplifier. Fig.7 Sonic Impact Super T, 1kHz waveform at 2W into 4 ohms (top), 0.108% THD+N; distortion and noise waveform with fundamental notched out (bottom, not to scale), with 30kHz sixth-order low-pass filter. Best Products. Interestingly, the Super T clipped at lower powers when powered by the linear 12V Monolithic supply with which Wes Phillips experimented. Sidebar 3: Measurements I preconditioned the Sonic Impact Super T amplifier with both channels running at one-third maximum output power for an hour into 8 ohms, but, as expected with an amplifier with a high-efficiency switching output stage, the chassis was as cold at the end of that period as it had been at the start.
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