Hiraga was there only that day to listen the system,but did anything in that system,only listen that day,system is 100% from Yamamura
I know well Yamamura since 1989.
He is incredible,work all day and in the night instead to sleep think how to do better.
First time came in my home brought Carbon block to put under my Sound lab,took my cable,keep out the plastic on the cable and put the copper cable in the oven of my mother at 200 degree and then put cotton around i bought in pharmacy.
Then explain to me the problem of image of cd because the margin of cd is smooth so ask me to go to buy sandpaper to keep out the smooth of the margin,ecc,ecc.
After 15 years was in sell the green pencil for the cd.
I remember dinner with him and my friends in that year.
In Italy we had ARC,Counterpoint,CJ,Jadis,ecc,ecc,but never saw or listen one triode amp or one horn speaker,no one distributor had something similar and Yamamura explained to us the horn system,the triode amp,difference between 845 and 211,300B and 2A3 and the difference between output trans in permendure,permalloy and superpermalloy and we were shocked
Then he lived in my home,i had big home and only i,my father and mother lived,for some months and i remember when he was under one tree to clean carbon block and my father brought the coffee to him
When he finish to build the power amp,4 stack,mono with external power supply,total weight 150 kg,with push pull of 845 we were schocked
We listened Mark Levinson 20,Krell reference 200,Cello Performance,Rowland M7,Jadis 500,all good amps but no comparison with this.
Yamamura told me the only thing to do better is to do a power supply with battery,but the problem is that there are no good battery in the world,the only good he can find through one friend in Scotland was the battery that use in nuclear submariner,so if he can find will do otherwise impossible to find good battery.
Also for dac in future told me don't want to do because there are no good chip in the market,all are terrible,so was very funny stay with him
He never finish because every day think something different and better.
He did one company in Italy ART,but after 2 years this company broken because in 2 years worked 12 hours every day but built near nothing,2 pre,3 TT,one amp and one speaker.
He ask ART partner for example to order 6 very expensive power trans built in special way,and when was near finish he told he had a better idea so can do trans better and don't want to use the ordered trans.
Then he went to London to do a company with Churchill and did speaker line in cork monovia and in 5 years change the driver,all hand made from him 6/7 times.and also this company closed.
I saw him ten years later in italy and he was working with Acrolink,to develop Acrolink in Europe.I ask him if are good cable,he told me cable are terrible,Acrolink doesn't know how to do a cable
In 1992 he start to do amp TT in current and gift me his mono prototype for my wedding,he was in my wedding.He finish this amp 10 years ago in my friend system
This is Yamamura