The shortfall was a little worse into 4 ohms: 9.2W (6.6dBW) instead of 11W (7.4dBW). 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. Then I had an epiphany. SI wins out mainly because of its resolution and transparency. The maximum voltage gain into 8 ohms was a little lower than usual, at 25.1dB, and the amplifier inverted signal polarity. 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. 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). On the rear are two sets of spring clip terminals for the speaker connections. On the front there is a combined volume control and on/off switch on the front. (I am now running it with a 3 Amp 12 volt power supply.) 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. Fig.10 Sonic Impact Super T, HF intermodulation spectrum, DC–24kHz, 19+20kHz at 3W peak into 4 ohms (linear frequency scale). Even at the level of a few millivolts, unless this energy is filtered, you can never be sure that you're not actually measuring the interaction between the RF content and the test gear instead of the absolute performance of the amplifier under test (again, see the PS Audio review). Sonic Impact fans will be delighted to find out that the new Son of T-Amp is an altogether better constructed amplifier than its predecessor and a bargain at $139. Yes, that is a $30 amp outperforming a well-reputed $350 integrated amp. Fig.8, for example, shows a spectral analysis taken with the low-pass filter of the amplifier's output while it drove a 50Hz sinewave at relatively high power into 4 ohms. Interestingly, the Super T clipped at lower powers when powered by the linear 12V Monolithic supply with which Wes Phillips experimented. Musical Fidelity M8xi integrated amplifier. The sound quality is similar to the original T-Amp although the battery- powered original might be a little smoother overall. The Gen 2 T-Amp features the same sound quality that made the original T-Amp famous, as well as the ability to operate off of 8 AA batteries. Be respectful, keep it civil and stay on topic. All the best products. audio line-in, over current protection, 15-watt portable digital amplifier for connecting personal CD or MP3 players to passive speakers ; Compatible with any standard 8 ohm or 4 ohm shelf speakers up to 20 watts ; Plugs into any portable CD, … For possible replacements or substitutions, please check the drop-down box below for a list of … Digital Amplifier: Brand: Sonic Impact: ITEM DESCRIPTION. I bought at $29.00 “Sonic Impact” T-Amp. With the latter set to its maximum, the input impedance measured a fairly low 7.8k ohms in the bass and midrange, dropping slightly to 6.5k ohms at 20kHz. Sonic Impact - amplifier overview and full product specs on CNET. Dayton Audio has taken the technology developed for the Sonic Impact 5066 and perfected it in this hand-held digital amplifier. The Dayton Audio DTA-1 is the perfect replacement for the now unavailable Sonic Impact 5066 NIB class T amplifier. Fig.5 Sonic Impact Super T, THD+N (%)vs frequency at 2.83V into (from bottom to top): 8, 4, 2 ohms (right channel dashed). 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). Sonic Impact Model i-F2 Type iPod / iPhone Speaker Docks Features | Features The i-F2 portable iPod speaker system uses our premium Class-T amplifier and neodymium speakers to provide the fullest, and most accurate sound quality possible. 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. (These odd-order harmonics disappear if the load impedance is increased to 8 ohms, leaving just the benign second harmonic as the primary spurious component.) Above 1kHz, however, the amplifier clearly has trouble maintaining its linearity into all loads. short circuit protection, The input impedance depended both on frequency and on the setting of the volume control. Fig.3 Sonic Impact Super T, small-signal 10kHz squarewave into 8 ohms. Fig.4 Sonic Impact Super T, distortion (%)vs 1kHz continuous output power into (from bottom to top at 2W): 8, 4, 2 ohms. 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. Discussion threads can be closed at any time at our discretion. Intelligent short-circuit and over-temperature protection ensure amplifier longevity.
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