LISA III Available for Order - Page 29

I got my LISA III Standard today, the only words when in my first tried are "Oh my God!". Can't believe it sounds such nearly perfect, I have heard this kind of sound before only in front of the hi-end audiophile systems priced more than US$10K. No kidding. Mine is a high-bias limited edition Brad chose for me. Really appreciated him, he is so kind.

Hi Guys, I just received my LISA III today and I noticed that when I plugged in my headphone, it felt like it's sticking out a bit and also, there seems to be a metal in the middle of the headphone hole. I was wondering whether it's normal. Thank you for the input guys.

I will let it burning in and charging for 15hours before start doing some listening.

Hi jlingo,

Phil has responded to a similar query posted at the forum of TriadAudio.net and I clipped the relevant part here for your information :-

Quote:-
Regarding the Headphone Jack, The jack is intentionally so positioned as to not allow the Headphone Plug Ground to contact the case as the LISA is a Three channel amp and thus the Ground of the headphone is actually the output of the ground Channel Amplifier. I believe it is secure enough for intelligent folks. I was considering a Plastic sleeve that would go in there. The RCA Jacks were intentionally chosen so as to allow the Batteries to be serviced by removing the (4) front panel screws and sliding the entire circuit board with the 9 volt batteries installed. Chassis mount jacks also require wiring and this is something i did not want to have on LISA III. When the RCA Plug is inserted the outer ring is shimmed between the metal rear cover and the RCA Jack this allows the Chassis to help stabilize the Pressure upon the Jack.
Unquote.

Hope this is clear.

The short answer: yes, it is normal, and intended by design.

F. Lo

Hi Jlingo,

As regards the metal inside the headphone jack, I think it is a spring contact that help to hold the plug in place. Mine works fine and I don't think it is a problem, although it does look strange at first sight.

F. Lo

After 100hrs burned-in LISA III is a pretty unique and impressive amp. It's certainly warm, TUBEY, seductive, and definitely inviting. These attributes what makes LISA III to be very addicting. No matter what recording you provide to LISA III it will still retain it's warmth inviting character and therefore very listenable(very forgiving). The bassboost is simply awesome, very tight and deep. LISA III also has better depth than m902. The sound is so seductive and inviting, making me want to sleep with LISA more and more.

m902 is a very superbly transparent amp TRUE SOLID STATE AMP and VERY GOOD FOR MONITORING. Hyperdetail. very dependent on the source you provide. If the source is warm, it will give you warmth. If the source is emotional, it will give you emotion. But if your source is clinical, it will spit out very clinical sound. Source in this context means Player and Recording. Crap in = Crap out.

My LISA III XP Woody comes in used so I have not been able to track the burn-in process. But I do believe most amps, solid state or tube, would benefit for burn-in. Suggest you give it some 100 hours before serious listening and share with us what you hear.

F. Lo

get a 24v regulated wall wart, the extra juice makes a difference, trust me.

I'm using 24V regulated ANSMANN Germany PSU.
100-240V automated Input.
great stuff.
Part no. 8694001/01

I will try to charge and burn-in at the same time. if it's still lasting for 2 days then, the charging process works. I don't see any indication whether it's charging properly or not.

Hey Guys, has anyone else in the UK got the Lisa III?

I bought an adaptor from Maplin Electronics in the UK. It's a 24Vdc switched mode regulated with a current of 800ma max. I selected the correct tip from the kit but the first time I used it with the amp after about an hour I heard a pop from the amp. It didn't seem to be charging so I opened the amp & found the batteries were "fried" - the casings had split open.
Now the amp seems ok & I have tried using it with the adaptor plugged into the mains without any batteries installed & it works ok.
So I am wondering if I have got the right mains adaptor. Where might I be going wrong? Also does the different mains voltages here in the UK make any difference?
I don't want to have to open up the amp to charge them everytime!

Don't worry about burn-in. Burn-in usually gets tossed around when people realize they made a bad purchase, or they don't like how something sounds, or they blame it on a cable because they need a scapegoat, etc.

Capacitors burn-in within the first few seconds of them being used.

If I remember correctly, Phil did specify 3rd party power supply should be linear and regulated. He also stated a voltage limit that must not be exceeded. I think "regulated" is more important than "linear" in terms of safety of operation.

What what you describe, it may be possible that your charge is actually injecting a much higher voltage that the specified 24V, as apparently it is not a regulated power supply. I would also suggest you check if the charging circuit is still intact, and there may be protection featuers in the circuit that become damaged in the incident.

Whenever we plugged in an external power supply to the LISA, the external power will "take-over" the battery power. This is why your amp still works with the external PSU plugged in and the battery removed. However, you may want to note that "consumer class" wall mart type of power supply is not best for audio purpose as there can be a lot of ripples in the "dc" which can ruin the audio qualities of a fine amp like the LISA III.

IMO, battery power is always a better choice in terms of audio qualities and your listening experience, unless you need a lot of juice that a battery bank may not sustain as it drains to a certain level.

Alternatively, I would suggest you go for Phils LLP Power Supply, which is an audiophile grade, laboratory quality, safe power supply designed specifically for the LISA III. Yes, it is not cheap, but this may be what you want if the LISA III is to be used as a desktop amp.

F. Lo

I am not sure if this is true for all types of caps, and especially the bigger ones

F. Lo

I actually also hear big differences after burn-in for both Hornet and Supermacro LE as well.

Some people hear a jar of pebbles changing the way speakers sound. The most fallible sense is probably hearing...

The best way to demonstrate burn-in taking place, would be some kind of objective measurement, not using someone's ears...

Yes it would be nice to have something with objective measurement. But if Sound, music, or paintings, or any other arts, if it has some sort of measurements, then I don't think that's is an art anymore.

Some people are just gifted to appreciate more art stuff than others.

Anyhow, I don't need to justify or convince myself for bad purchases. My wallet didn't scream just yet.

I suggest you try to listen to a brand new SM LE and 400hr fully burned-in one. and try to use a blindfold to pick which amp is new. I could identify it almost immediately.

Perhaps we should make this as a fund-raising game. more fun with jury, during headfi meet perhaps?
1. SM LE NEW
2. SM LE Burned-in 400hrs.

or
1. HORNET New: Harsh, dynamic, strong, punchy
2. HORNET 100hrs(AT 100hrs Hornet Lost its bass, smooth, unlively)

Burn-in Believers will be blindfolded, and Burn-in Doubters will try to swap the amp anyway they want. If the believer could detect which amp is the new one, then the Burn-in Doubter must put $100.- into Head-Fi Sponsor account, or any other charities.

THIS MUST BE COOL!