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LISA III Available for Order - Page 44

post #646 of 1070
Quote:
Originally Posted by ManAtWork View Post
and the mark in bass knob wouldn't misspell again. However, I like my one because it is unique.
All your BASE belong to us.

post #647 of 1070

Dimensions Of The Lisa

Any idea whats the dimensions of the lisaIII standard.And the weight as well.

Tks
post #648 of 1070
Wow, this is by far the best sounding amp i have ever listened to.... I have the Diablo, RSA Hornet, 1616m.... but the Lisa...

Exact dimensions of my Lisa III XP are [17cm-L x 7.8cm-W x 4.3cm-H]

Test Album: Astral Projection - Dancing Galaxy from 4G iMod. Ummmm
post #649 of 1070
Quote:
Originally Posted by Gnoshroom View Post
Wow, this is by far the best sounding amp i have ever listened to.... I have the Diablo, RSA Hornet, 1616m.... but the Lisa...

Exact dimensions of my Lisa III XP are [17cm-L x 7.8cm-W x 4.3cm-H]

Test Album: Astral Projection - Dancing Galaxy from 4G iMod. Ummmm
What type of difference do you hear?
post #650 of 1070
I guess the Lisa III xp is supposed to be a bit taller than the standard but any ideas whats the weight in grams for the standard and the xp.I am looking to get in down to india but then cant have that person carrying huge load as I am sure they have there own purchases lol.So would I be getting the amp+the charger anything else????.Howheavy is this entire set goona be (ofcourse excluding the box that it coms in)
post #651 of 1070
I haven't had a chance to do back to back blind testing with all 3 amps, but from the 30minutes I spent listening to Astral Projection... I can say that Bass couture of the LisaIII is much more noticeable compared to the Diablo. As far as sound goes... I'll a post full review/results once we get the right LisaIII version, burn it in some, and have a few hours to fully compare... From the brief listen so far, all I can say is wow...

Update: Awaiting an Au/Ag V-Cap Dock and Mr.DjSchock to provide proper LISAIII version, Ultrasone Ed. 9, HD-650s w/ Equx. Cable, and the Atmosphere/Creamware Virus Access VSTs to experiment with ~
post #652 of 1070
I'm confused- why 300 for the LLP if triad recommends the elpac external power supply WM050-1950-760 themselves... / the variety of other adaptors out there that could do the same job of powering this for truly a fraction of that staggering $300 cost

I have to be missing something big
post #653 of 1070
Quote:
Originally Posted by Luminette View Post
I'm confused- why 300 for the LLP if triad recommends the elpac external power supply WM050-1950-760 themselves... / the variety of other adaptors out there that could do the same job of powering this for truly a fraction of that staggering $300 cost

I have to be missing something big
The Elpac is good for charging the batteries, which provide a clean, steady, noise free d.c. to the amp circuits, which to a large extent, provide the black background of your headphone listening experience. While the Elpac is reasonably good, it is quite inferior when compared to the power a battery delivers. The commercial grade AC/DC converter, which the Elpac is esssentially one, will inevitably produce ripples in the d.c. current it produce, and that can affect the sound you hear through the headphones.

That's is why Triad Audio offers the LLP (Laboratory Little Power) which is a lab grade power supply that produce a d.c. that is comparable to the batteries, except that it is always on tap, and have a slight more juice to produce that extra swing in dynamics and headroom for those gifted ears.

FWIW, once a charger / PSU is plugged in the LISA, it overtakes the power supply to the amp, while charging the battery at the same time.

I hope this helps.

F. Lo
post #654 of 1070
Who do you contact at Triad if you have questions? I emailed but have have received no response.
post #655 of 1070
John,

Brad should be the contact for most cases - he runs TriadAudio. But to my knowledge Brad has other non-audio business so he will have to split his time.

For logistics, you can try Linda, his assistant, who is helpful most of the time.

You can also PM ppl at TriadAudio.net forum - to approach Phil for specific design questions - but Phil is not always there. He is busy with some ultimate solid state amp project.

I hope this helps.

F. Lo
post #656 of 1070
Ok. Can the Lisa III run effectively off of an external 18 volt battery supply?
post #657 of 1070

More information about the LLP Power Supply for LISA III

Hi folks,

I browsed through the manual of the LLP and would like share the following which may be of interest to existing / potential LISA users :-

Quote (these are written by Phil) :-

" This LLP power supply is intended to provide precise regulation with extremely low noise throughout the audio bandwidth, thus providing your LISA III a reference quality clean DC voltage of 24 Volts @ 100 mA nominal up to an intermittent 300 mA of available current. The LLP contains BOTH pre- and post- regulation circuitry, to provide the absolute lowest AC ripple component for a velvety Background of Silence from your amplifier. Wide bandwith is extremely important in an Audio Reference Class power supply to maintain a consistently low impedance over the entire audio range thus allowing your amplifier to maintain a consistently low output impedance for critical damping of the headphones at all frequencies, not just the low bass typical of power suppliers powering small headphone amps."

"...... If one carefully assess what actually makes a difference in the sound of your amplifier is the quality of its power supply....."

" The A.C. Mains power enters the LLP via an IEC power cord receptacle and into the PC Board mounted EMI power line mains filter that filters both common mode as well as differential noise. This removes RF interference and other high frequency noise that otherwise would contaminate the AC mains power entering the unit. The AC from this filter deliver to the ultra low noise Toroidal power transformer. This 14 watt transformer is specified at both 50 and 60 Hz and includes two 115 volt windings to allow international voltage operation from 100 - 230VAC @ 50/60Hz. The output from the power transformer is dampened by a snubber network across the transformer's secondary windings, to suppress rectifier diode noise in the transformer. The AC outputs of the two dampened secondary windings are impressed upon a Full Wave Bridge Rectifier using Shockley diodes for low switching noise. Primary Reservoir storage and filtering is provided by a low ESR high temperature electrolytic capacitor for long life and high performance over a wide frequency range."

".... The Regulation Circuitry is designed from the ground up for Extreme DC precision and vanishing low noise. The techniques employed in the LLP are at cutting edge of linear power supply design. At the heart of this stage is a fully discrete component Error Amplifier. An Error Amp is commonly used in a circuit where error correction is required. ........... This Error Amp stage utilise ultra low noise bipolar small signal transistor of the type generally reserved for use in low noise audio electronics such as microphone and magnetic phono preamps. This assures that the output of the LLP is free from excess internally generated noise."

" This precision Error Amp is supported by a constant amount of current from a temperature stable ultra precise current source for a constant output current in the face of wide temperature ranges to maintain Class A operation for the utmost in linearity.....

"The voltage reference for the LLP's error amp is a string of blue LEDs. The Blue LED is extremely fast and quiet. LED's also have a temperature drift that is a polar opposite of silicon and thus the silicon based error amp changing in one direction with temperature the LED characteristics are changing in exactly the opposite direction and thus provide for a totally temperature stable power supply eleminated a major source of low frequency noise. This critical voltage reference, as are all other voltage references within the LLP are supplied by a constant current via precise FET current sources; this substantially improves the accuracy of the voltage reference resulting in cascading gains in all areas of performance. ......"

Unquote.

I hope the above provides a brief account of the design intent and goals of the LLP, which in a way is what it takes to explore the full potential of the LISA III.

F. Lo
post #658 of 1070
yes, thank you very much, fkclo

there's another hit to my wallet...
post #659 of 1070
This amp brings tears to my eyes every time I listen...
I've only run into 1 problem so far..

When using my iMod with any small portable amp, I'm left disappointed and completely disckumptflaught (as Shpongle would say). I stand there dying to go back to Lisa! It's like listening to a pair of Genelec 1037s and then going to some KRK RPs. Once you go Lisa you don’t go back.

As far as the powersupply goes, I'd rather feed my LisaIII some prime cut voltage then trust her with some random PS. I've seen way to much audio equipment die to crappy charges and dirty power
post #660 of 1070
Quote:
Originally Posted by Gnoshroom View Post
As far as the powersupply goes, I'd rather feed my LisaIII some prime cut voltage then trust her with some random PS. I've seen way to much audio equipment die to crappy charges and dirty power
As far as power supply goes, I think the analogy is the fuel you use on a cutting edge race car. Will RON 98 unleaded work ? Yes, sure. But the performance of the car will not be even close to the same car tuned to run of RON 105 / ethanol mix !

F. Lo
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