PMC TB2i 小小小分享

obee

ref-1 幾錢??? ching 可唔可以介紹吓!!?
beckham233 發表於 2012-1-18 15:59

According to YS-Audio Nelson, I try to explain in more simplify way:
Price:
A2 ~7.5k (R2-SE ~11k)
A2-SE is same as A2 except "mod" the capacitors and the connectors to big brand (add 1k for capacitor upgrade, add 2.5k for connectors upgrade)
Ref1 ~3 times of A2

A2 uses coupling capacitor (the sound comes from capacitor, like most pre-amp does in market, good capacitor results good sound)
Ref-1 use line output transformer (he said 4 transforms for 2 channels, sound from transformer, good transformer results good sound)

This is the major difference...
A2 makes capacitor sound, ref-1 makes transformer sound... The major difference according to Nelson is that, capacitor is weaker when it requires lot of high current output (e.g. lot of bass sound) because capacitor needs recharge. But the burst current is higher for capacitor design. Some people like capacitor sound and will not like the sound of ref-1 (he said just like most people believes that RCA is better sound than XLR)

Also,
A2 has remote, has AV bypass
A2 uses solid-state regulator, Ref-1 uses 6X4 Tube for current regulator.
Ref-1 no remote (due to design of vol adjust button, it use array of resistors, so not easy to add remote), no AV bypass

Note that:
Ref-1 uses better resistors, better volume control, external power supply (to avoid interference with line output transformer.
There will be a "remote control" version of Ref-1 coming 2 months later, with remote + av bypass + phase invert. On the remote, you can select: main vol, L/R individual vol, mute, input select, av bypass, phase invert. A small two digit LCD display will be added to the front panel to display volume (-xx Db).

Spec is dead, listen yourself is the best...

I just tell what I understand after listening to him, you may email him (info@ys-audio.com) to ask for detail. He's too technical...

beckham233

回復 31# kenneth_obee


    Thank you Kenneth!! It's very detail explanation! I'll find time to try try!!

obee

回復  kenneth_obee


    Thank you Kenneth!! It's very detail explanation! I'll find time to try tr ...
beckham233 發表於 2012-1-18 16:32

Remind you again, spec is just spec...

babuwa

Ching how much you buy?

beckham233

Remind you again, spec is just spec...
kenneth_obee 發表於 2012-1-18 16:34

    耳聽為實!! 但部Ref-1 要成~$2xk 都唔平wor!!!

obee

回復  kenneth_obee


    Thank you Kenneth!! It's very detail explanation! I'll find time to try tr ...
beckham233 發表於 2012-1-18 16:32

One more thing, remember to make an appointment, don't ad-hoc walk-in as only Nelson will serve you, his partner just work in warehouse and he will not entertain any visitor.

obee

耳聽為實!! 但部Ref-1 要成~$20k 都唔平wor!!!
beckham233 發表於 2012-1-18 16:38

    The difference is:
1. Use Western Electric tube (ebay about 200USD), $1600
2. Use 4 line output trans (http://www.eifl.co.jp/index/export/ISO.html), $5400
3. Good resistor (don't know the cost...)

做生意都要有利潤, 同外國比真係好平...
如果可以diy就更平啦...

beckham233

回復 37# kenneth_obee


    似乎Kenneth 兄您已有答案wor!!

obee

回復  kenneth_obee


    似乎Kenneth 兄您已有答案wor!!
beckham233 發表於 2012-1-18 16:45

又唔係，因為現實係我老婆好煩，我好難可以安靜聽歌。如果會買膽前，ys 會對我呢講好d ，因為佢d 膽橫放金屬箱內，唔怕小朋友
同埋我鍾意個声底夠清，立体，人声有膽味

obee

我個plan 係請工人，迫爆間屋,跟住換屋先諗玩乜