There are a many reasons for my search of the Simply 2. Firstly, this is a single ended class A amplifier and there isn't many single ended tube amplifier available in the market. For those who have heard the single ended amplifier, can surely remember that the music from the single ended amplifier is superb! The only set back of single ended amplifier is the low power which needed a high sensitive speakers.
Secondly, it has a nominal impedance of 4 ohms that can match nicely with my Sonus Faber, which is also 4 ohms. Previously, the matching of the impedance has also been a challenge for me.
Thirdly, from the visual point of view, the colour of the wood panel of the Unison Research Simply 2 matches nicely with the colour of my Italian speakers. In the past, the look of the amplifier and speakers were not important to me. However, being a brand person who love beautiful objects, it will also be nice to find beautiful and yet nice sounding hifi and I must say that The Italian did it again with beautifully hand crafted amplifier and speakers. After all, when one is listening to music with our ears, our eyes very often will look in front and naturally the speakers and amplifier will be the objects of viewing.
The fourth reason is the relatively cheap costs as under Hk$10,000 amplifier is really value for money when one compare the sound versus price ratio. The original retail selling price was Hk$19000. There are many improvements made for the limited edition series including the volume remote, silver wiring for internal circuit, better speakers connectors, as well as improved transformers.
Moreover, the simply 2 only uses 2 EL34 tubes and two ECC82 tubes making switching of different tubes manageable and inexpensive.
Many years ago, I used to own the Unison Research Simply 4, and I am quite familiar with the sound....lovely!
Its like time travel back to the days when I discovered the great sound from tube amplifier.
In summary, the differences between the old Simply 2 versus the SE special edition includes:
1. The SE has a remote for volume control
2. The SE has a metal plate on top of the amp
3. The SE has upgraded the speakers connectors plugs behind as we'll as used a improved transformers and silver wiring in its circuit
4. The wood used for the panels have changed.
5. The SE has a removable power cord socket.
Some reviews:
http://www.gzhifi.com/audio/20081427.html
http://en.unisonresearch.com/371/simply-two-anniversary/
http://feature.u-audio.com.tw/featuredetail.asp?featureid=109
The simply two is a very well build and beautifully crafted amplifier. The size is slightly bigger then my Elekit amplifier and weigh much heavier. As my Sonus Faber has been ran in, the amplifier sings beautifully together with the Sonus Faber. With the good sound and beautiful design, what more can we ask?
What is the single ended?
The single-ended stage is the type of output stage used in the venerable Fender champ guitar amplifier and countless millions of early radios and tv's. It is making a comeback in high-end vacuum tube audio in the form of the single-ended triode stage, which supposedly is the "ultimate" in hi-fi sound reproduction. It is as inefficient as it is good sounding, putting out very low power levels in comparison to push-pull output stages. Another problem with this type of stage is the transformer must handle a continuous DC current. This results in a physically larger and more costly output transformer, which must be gapped to prevent saturation of the core due to this offset DC current.
‧工作方式 ： 純 A 類放大單端輸出
‧輸出功率 ： 每聲道約 12 瓦
‧輸出阻抗 ： 4 或 8 歐姆對應
‧輸入阻抗 ： 47 K 歐姆／50 uF
‧負回授 ： 10dB 消耗功率 ： 85瓦
‧使用真空管 ： ECC82 / 2AU7 × 2；EL34 / 6CA7 × 2
‧外型尺吋（寬×深×高） ： 27.5 × 37.5 × 16.5 公分
‧重量 ： 14 公斤
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Location:Metropolis Drive,,Hong Kong
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