CONSIGNMENT SERVICE

我們最近擴展了包括寄售的服務,但暫時只限於長期熟客的委托。

We have expend our service including selling equipments on consignment. Though it will be limited to a number of nice long time customers for the time being.

這是一件鍍金外殼的再版MC-275. 極好的外觀又跟機4支再版金獅K T 8 8新膽,強而有力又圓滑的聲音.75瓦輸出,工作於220伏特(可以調接至100~240 V)只售$23800元

MCINTOSH MC-275 reissue model with gold plated casing. Excellent condition with new gold lion reissue KT-88 output tubes. Powerful and smooth sound. 75Wx2 working on 220V (convertible to 100-240V) Only $23800 hk.

 

古董MCINTOSH MC-240 , 這件器材狀態十分美好,所有高壓用的電容已經換新但其餘大部分都是原庒的,40瓦特輸出已經足夠推動大部份牌子的𠶜叭,115 V工作電壓,只售$18000元

MCINTOSH MC-240 vintage model in very good condition. All high voltage caps are renewed but the other caps are mostly original. Though 40Wx2  but Sufficient power to drive most speakers. Working voltage 115V. Only $18000 hk.

 

古董HARMAN KARDON II 後級,狀態不錯,下部份電容已經換新確保工作正常穩定,溫暖及有動感的聲音,60瓦特輸出足夠推動甚至效率較低的音箱。115 V工作電壓,只售$13800元

Harman Kardon CITATION IV vintage amp in good condition. Most of the high voltage caps and some signal caps renewed to ensure proper operation. Very warm and punchy sound. 60Wx2 output power which can give good result even on low efficiency speakers. Working on 115V. Only $13800 hk

 

這是壹對狀態十分不錯的古董FISHER AZ-80 單聲道後,大部分零件都是原庒的'跟機是6L 6輸出膽'每聲道30瓦特輸出'音色甜美醇和而力水不俗'115 V工作電壓,只售$1388元

One pair of Fisher vintage AZ-80 mono power amplifiers in good condition. Parts mostly original even on the high voltage caps. Comes with 6L6 power tubes to give 30W per channel. Sweet and mellow sound and give sufficient driving force. Working on 115V. Only $13800hk.
Conrad Johnson MV-55 power amplifier in very nice condition. Gold quality Tesla EL34 tubes. Warm and powerful sound.  45Wx2 output power and can be rewired to triode to give 22Wx2. Only $10800hk.

 

美國制造的後級,每聲道用6支5881燈膽,五極輸出150瓦而三極接法亦有75瓦輸出,此機狀態不錯,力水及分折力都十分好,大小喇叭都合適配搭,超值價$10800。
MESA BARON power amplifier which has 150Wx2 in pentode mode and 70Wx2 in triode mode. The unit is in good shape and comes with nice SOVTEK 5881 tubes. High quality amplifier made in USA.  Very powerful and good control on speakers, either large or small size. Affordable price at $10800hk only.

 

日本發燒牌子UESUGI U-BRO-3 後級,狀態不錯及用Jensen 電容升級了高壓及過訊號的部分,標準日本名牌膽機獨有清晰細緻的音色,50瓦特輸出,工作可以選擇100 V或115 V,只售$10800元

UESUGI U- BRO-3 power amplifier made in Japan in good condition. Upgraded with Jensen caps on high voltage supply and on signal path. Clear and smooth sound like many other famous amps made in Japan. 50Wx2 and works on 100V or 115V. Only $10800hk.

 

日本名廠LUXMAN A-3700 後級,狀態好而又用Jensen電容升級了,其他零件亦換用高質系列的品種,現今能買到最物超所值的後級,50 W輸出,100 V工作電壓'只售$7500元

Luxman A-3700 stereo power amplifier made in very good condition. Upgraded with Jensen caps on the high voltage supply. Other parts renewed with high quality parts. Most cost effective amplifier you can possibly find. 50Wx2 and works on 100V. Only $7500.

 

美制名廠機KSA-250後級,曾經名噪一時,A類工作而輸出8歐母負荷時有250 W,是低效率及低阻抗難推喇叭的最佳選擇,此機罕有的新淨,現在只售超值$18000元

KRELL KSA-250 in excellent shape with output of 250Wx2 at 8 ohm. Class A operation ensuring warm and sweet sound comparable to tube amplifier. Ample power to drive any low efficiency and low ohm loading speakers. One of the most famous amplifier in the pass decade. Now only $18000hk.

 
壹對狀態不錯的英國古董QUAD II 後級,在當時是十分有名氣及音色有口碑的產品,輸出功率只有12瓦特但與高效率揚聲噐是絕配,工作電壓可以選擇由100-125 V,只售$9800元而已。

One pair Vintage Quad II mono power amplifier in good condition. Said to be the most common andbest sounding amplifier made in England at that time. Units work on 100-125V and gives 12W output. The best combination for high efficient speakers. Sold for $9800 only.

 

RADIO CRAFTMAN C-400 mono power amplifiers

 

PILOT AA-410 mono amplifiers

 

還有以下多款前級可供選擇:

We also have some preamps on consignment:

 

法國名廠JADIS質數有口皆碑不用太多介紹,此機狀態不錯是後期有四支膽的品種,音色華麗場面寬大是其特色'現在只售超值價$14800元。

JADIS JPL 1Mohm preamp in very good shape. This unit has four tubes indicate it has one extra tube for the CD input at one megaohm input impedance and greatly improves sound quality. The caps are black in colour and made in England shows that it was of the later production batch. Smooth sound with large sound stage, great for vocal and also large scale orchestra music. The best unit you can buy at this price level. Only $14800hk.

 

古董膽機PILOT SP-215機齡雖大但罕有新淨,只部大部分都是原廠零件,只有少量換新以保障其耐用及正常工作狀態,有唱放部分連接用家心愛的唱盤,擁有此類膽機獨特厚暖的音色。115 V工作電壓,只售$12800元

Vintage Pilot SP-215 preamp in ver excellent shape with consideration on its age. Most of the parts are original with minor renewal so that unit can work properly for very long time. Phono input enable the use of your nice turntable. Sweet and warm sound that can only be found in these old preamps. Works on 115V.Only $12800hk.

 

另有對外觀十分完整的古董SCOTT LC-121B 前級,機背所有接入插座已經換新確保接觸良好,機內有些零件亦已換新令運作更加穩定,為了省卻沒有什麼利用價值的功能所以有些膽沒有插上,溫暖舒服的音色。115 V工作電壓,只售$10800元。

SCOTT LC-121B vintage preamp in very good condition. Input RCA sockets have been replaced with gold plated type and some parts renewed to ensure proper function. Some tubes are not inserted but unit will work without some additional features only. Warm and easy enjoyable sound. Works on 115V. $10800/pair

 

極新淨的日本冷門但發燒級的MACTONE XX-301唱放前級,三組唱頭輸入及內藏用膽放大的M C唱頭放大器,這個設計確保有更濶的頻寬及更強的放折力,相信是這個價錢範圍內的最佳選擇,100 V工作電壓,只賣$13800元。

MACTONE XX-301 photo amplifier in excellent condition. Very high end and outstanding quality unit made in Japan. Three input with unique mc head amp built in using vacuum tube to expand frequency response and provide better resolution power. Possibly the best phono amp in the market within this price range. Works on 100V. Only $13800.

 

日本SUNVALLEY SV-192A/D 前級,內有非常特別的A/D轉換器,多種功能令你樂在其中,設計獨特但價錢超低,100 V工作,僅售$7000元。

SUNVALLEY SV-192A/D preamp with a rare function of analog to digital design. Many features and various function that you can learn and use. Very interesting and unique preamp that you can possibly found at such low price. Made in Japan and therefore works on 100V. Only $7000.

 

加拿大制造狀態不錯的ASSEMBLAGE L-1前級,膽溝石設計所以只需用一支膽,性價比十分高,只售$3800元。

Assemblage L-1 preamp made in Canada in good shape. Simple and elegant design with the use of only one vacuum tube. Great sound for the money invested. Only $3800hk

 

波蘭制造HATTOR AUDIO外表近完美的X衝級,可以放在訊源與前級中閒去提升音質厚度及㘣滑感,減少所謂的數碼聲,其功能遠勝同價或數倍價錢的發燒線,僅售$5000元。

HATTOR AUDIO buffer amp made in Poland in excellent condition. It can be placed between signal source and preamplifier to enhance warmth and smoothness, greatly reduce harshness and so call digital sound etc. It will beat the performance of any highly priced cables you normally use. Only $5000.

 

香港寶樹於黃金時代的𠎀作,這個無源前級用兩個英國特制的級進式衰減,高級輸入插座及純銀接線所構成,表現勝過幾倍價錢的膽或石前級,現在只售$4000元,平過買料。

Passive preamp made by HK BUSH in the good old days. Two volume pots made by SHALLCO (England)are being used here . The RCA sockets had been renewed and internal wiring upgraded. Can simply outperform many tube or transistor preamp several times of its value. Only $4000.

 

美國HEATHKIT AA-151 膽合併機,狀態十分好而大部分是原庒零件,音色甜美,用EL84輸出膽,有14 Wx2 功率'115 V工作電壓'只售$6000元

HEATHKIT AA-151 tube integrated amplifier in very nice condition. Most of the parts are original with only some minor renewal. Beautiful and sweet sound. Using EL84 on the power output stage. 14Wx2 and works on 115V. Only $6000hk.

CELLO EQUIPMENTS RESTORATION AND REPAIR

We have recently acquired quite a lot of Cello equipments for restoration and repair. These jobs have become quite a common practice since Cello equipments appeared since 1980s and most of them are nearly thirty years old. The capacitors are the most vulnerable component that are going into trouble. Most of them start to fail due to leakage of electrolyte fluid or getting dry, losing the capacitance or simply short circuit.
We believe that these equipments can be restored to the original performance level with the renewal  of all the electrolyte capacitors and other components which may find to be defective. Most of them will be replaced with caps having the same capacitance and same makers as well in order to ensure a successful restoration. Caps of other makers have their own characteristics which may affect the sound quality of your precious equipments. It may still work alright but it is just not all right. Something is missing that anyone can sense the difference.
Cost of our work depends on the parts that need to be renewed and we cannot give you a precise amount unless the equipments are examined and tested. We are confident that you will be satisfy with our work since it will be done with utmost care and good workmanship as well, and the parts are mostly original (we have large stock on parts which are specially ordered two decades ago). IMG_1522 IMG_1523 IMG_1516 IMG_1518 IMG_1519 IMG_1525 IMG_1528 IMG_1526

CRAZY YEAR END SALE – SUNAUDIO AMPS

In order to move the last remaining stock on SUNAUDIO amps they are being sold at extremely affordable price. Do not miss the chance or it will be too late.

為了酬謝諸位SUNAUDIO的存貨將以最優惠的價錢出售,萬勿錯過勿失良機。

 

IMG_1082

Demo unit using F-913 output transformers. It has better performance than the original SOT-525 with additional 4 ohms output tapping. This united has upgraded with Jensen caps. Excellent condition. Last piece in stock. Price is only $16800. 這件是示範品,狀態近全新,輸出牛是F-913比原庄SOT-525特性高一級及有4歐姆輸出抽頭,用Jensen 電容升級,最後壹件,只售$16800hk.

 

IMG_1083

This unit has Tango output transformers and also other upgrade parts. Very good condition. Only $14800. 這件用了Tango輸出牛及其他發燒零件升級的,狀態十分良好。只售$14800.

 

IMG_1079

A rarely seen 2nd hand SV-2A3 in very good condition. The output transformers was repainted. Excellent performance and best selling model. Only $12800. 這件是十分缺貨的二手SV-2A3. 輸出牛重新噴油但工作完美,是最𣈱銷的一個系列. SOLD

 

IMG_1100

One of the most affordable amplifier with power and control. The SV-6L6SX is loved by many buyers  due to its low price and good performance. This 2nd hand unit is only $9800hk. 十分超值的放大器,有力水及控制力,討人喜歡的價格舆優質表現,這台二手機只售$9800元。

 

IMG_1111

Another piece of SV-6L6SX using smaller output transformers made in Japan and other good quality parts. Performance is comparable to the original. Only $8800. 這是另一件SV-6L6SX但用了體型較細日本制造的輸出牛及其他優質零件,表現十分接近原庒機,只售$8800元。

 

IMG_1096

 

The long time best selling amplifier employing the circuit of WE-91A amplifier. In these units, Tango U-808 output transformers are used. The power transformer was made by HP USA. The beautiful sound of 310A pentode-made by various makers- is being fully realised due to the combination of 300B as the output tube. Small size but great performance. Only $13800/pair. 這是一款長期十分𣈱銷使用西電91 A後級線路的放大器,輸出牛是TANGO而電源牛是美國H P制造的。在這裹310 A及300 B的配搭令五極管的優美音色及質感等發揮得淋漓盡致。只售$13800元。

 

IMG_1087

This unit used one pair of 300B Tubes each channel to give 30W output power in push pull configuration. Tango power transformer and Tamura output transformers are being employed here. Excellent control power and silky sound. Only $23800. 這件是300 B推挽設計的後級,每聲道30 W輸出,出色的控制力及幼細的音色。只售$23800元。

 

IMG_1086

Amplifier using 845 as the output power tube. The output transformers are the model SOT-850 while the Tango power transformer is used here. Working at around 500V the output power is increased to 12W. The use of switching power supply module for the 845 filament enable the amplifier to operate for prolonged time while the power transformer remains warm only. Special design and unique sound quality,$16800hk only. 使用845作為輸出管的放大器,輸出牛是SOT-850而電源牛是Tango制造的, 工作電壓是500 V左右令到輸出功率增大至12 W左右,由於使用開關式電源作燃點845的燈𢇁,所以即使長時間工作電源牛仍然只是微暖而已。特別的產品,別樹一格的音色,只售$16800。

SUNAUDIO SV-300BE new version

剛從日本運來幾件新款的SV-300BE,所有火牛外殼都改變為方角,高度增加近壹寸而銘牌亦變大了,整體來說覺得外觀更加好看更有吸引力。我懷疑輸出牛除外型上有所改變外其他分別應該不大,但電源牛及握流圈明顯變容量比以前的有所增加,預期長時間工作這些火牛不會像舊型號那些那麽燙手,對於準買家來說是一個喜訊。
We have just received a few pieces of SV-300BE (new version) from SUNAUDIO JAPAN. All the transformers have been upgraded to new version having square top corners. These transformers are taller in height with larger logo plates on top giving a more attractive appearance. I suspect that there is not much difference in the output transformer SOT-525A comparing to the old one though it has increased in height, but the power transformer and choke are replaced with the PC-1035E and CH-515A which have bigger capacity than the old one ( PT-150B and CH-515). In fact these power transformers runs much cooler than the former (the old version become quite hot in time running. It is a good news for the buyers.

IMG_0750 IMG_0744 IMG_0747 IMG_0745
十分抱歉,價格現在提升至$23800元。廠家解釋因為材料價格升高及火牛容量增大以致成本急劇成比例變高,再無法維持以往的售價了。目下只有兩件存貨,下壹批次有可能在數月後,或者更久也不一定。
price is now $23800HK. Sorry for the increase in price but the increase in the cost of material and upgrade in transformer makes it impossible to keep the old price. Only two units are available for the time being. Next shipment may take up to 3-4 months or even longer.

SUNAUDIO 845 amplifier – new version – less heat, better sound

739B557D-2F30-4CF7-B268-AC82DFE03ADE

No upgrade in parts but still sounds wonderful. SOLD

 

4E89DA8C-D70A-458F-B25A-C0495C7DE4A3

Totally ungraded with Jensen capacitors. Really sounds great and nice looking. SOLD

 

02FF39F7-C351-47CF-88E2-74C9FBF14D23

Last piece of modified unit lighting up. No upgrade in parts. Amazing sound quality and good looking. SOLD

022AAC1A-8E69-4222-913A-B680CB466F16

Two modules (switching power supply mounted on the bottom cover plate. Easy access for doing upgrade.

10E8078E-AAD1-4FEC-BA13-D8ECC93CA25E

Bottom plate put on and secured. Just enough space thanks for the small size of modules.They stay warm only after several hours of operation.

I always wonder why Sunaudio did not produce any kind of 845 or 211 single end amplifier in their series. At closer study it was found that the same power transformer (PT-150) is used on all their amps (except the top model SV-300BSM). There is no 10V windings ( filament of 845 tube needs 10V) on the transformer, and two 10V AC 5A windings are required because the big tubes need DC on their filament in order to get reasonable low hum at the speaker output terminal.

很久以前已經有這個疑問,為什麼SUNAUDIO沒有生產使用大型燈膽如211或845等的管子作為輸出功率管呢?細心的觀察一下不難發覺差不多在所有型上使用的電源牛(PT-150)是沒有10V燈𢇁用的繞組,而若果用這類大管時必須有2組10V5A的燈𢇁繞組用以提供2組10V直流給燈𢇁用才成,否則喇叭會聽到相當大的交流聲。

I have tried to fit (barely sufficient space) and use Tango or Hatsimoto power transformers on a few units but they becomes alarmingly hot during prolong usage (not more than 4 hours). Though I learn for a long time that switching power supply is used on some big power tubes (212 and 833A) filament supply, I have no idea how these items can be fitted on Sunaudio amps.

我亦嘗試過用TANGO或橋本火牛(體積可以勉強放下)放在一些實驗機上使用.但長時間使用時熱量大高(四小時後)。雖然很久以前已經知道有些設計是使用開關式電源組件作大管子如212或833A等燈𢇁供電,但我並不知道這些是否可以用在SUNAUDIO的機種上。

Recently I have bought two 12V 50W switching power supply and commence my experiment. It proved to be a success and it is also possible to squeeze two of such unit inside the casing.

I am very pleased with the finished product. The sound quality is better and the hum is even lower than the previous version, and the power transformer runs warm only after a few hours operation.

最近買了2個12V50W的開關式電源組件做實驗,實驗是成功的,2件組件都可以擠入機箱內。對於件成品我十分滿意,跟以前的制成品相比,它音色更好噪音更低,並且火牛在數小時工作後只是暖手而已。

Three units are modified. There are difference on the use of parts and therefore not are the same price. Hope you like and enjoy their performance.

改做了三件成品,因為三件機內零件畧有不同,所以售價不一樣。希望你們會喜歡它們的表現。

Oversea buyers are welcome. But please be noted that the amplifiers works on 230-240V AC only. Free packing but SHIPPING  and other charges are hot included in the price. YOU can pay through PAYPAL. $1US=$7.8HK.  Please contact me at : refaudiohk@gmail.com

 

The BEST and BIGGEST headphone amplifier on the PLANET?

I have just completed a project on one of the BEST and possibly the BIGGEST headphone amplifier on the Planet. It is huge (600mm wide x 300mm depth) and weight around 70 lbs.

It was tailor made for a young guy who has the rare passion on the sound of vacuum tubes. I had built a couple of headphone amplifier for him using different types of direct heat triode tubes, and this is the final and ultimate construction of the series.

Tamura ISO transformers are employed for the construction to ensure un-surpass sound quality. We follow the golden rule – SIMPLE IS THE BEST.  Top grade iron plus best quality parts, simple and straight forward circuit design.

Here we use Western Electric 275A as the output tube. Compare to WE 300B, it is not well known, but considered by some audiophiles to be better or at least as good as the big brother. The useful output power of this tube is merely 4 watt, but it is already more than we need. The miniature western electric 417A is the driver tube. It will be coupled to the 275A through a interstage transformer. The design is extremely simple and effective as there is no capacitor in the signal path, and therefore no colouration or delay of any sort. The input is connected direct to the CD player or any signal source, and the level controlled by a high quality volume pot.

I am not going into detail of the construction and choice of parts etc. You may have other design and preference on parts. Hope you enjoy.

108f5d06-b67f-49ff-bf41-7c9a946f45e6 a6e6a84d-76f3-468d-8041-994ae17c6a04

 

 

TANGO and TAMURA TRANSFORMERS

Updated  2-2025

Got from my good friend some brand new and use transformers made by Tango and Tamura transformers. They are on sale at special price. Don’t miss the chance!

5C6EBF08-B808-4740-97DA-709C5F2398A1 9E011D09-3A49-48B4-BA2D-5D82C92F237F 84D43135-19E3-44C9-BCB3-39178A11A360
TANGO X-8P old version not ISO new in box $20000/pair
TANGO  ISO  LCPF-100-150D 100H 150mA Plate Choke for 212, 833A, 845 etc (matching with output transformer below)

TANGO  ISO  FCPF-100-5S  100W 5K  output transformer parallel feed (match with the above choke)           total 4 pieces    $28000

TANGO ISO FC-40-3.5  for 300B, PX-5 etc. new in box.                         Sold

TANGO ISO NC-20F II  interstage (the best you can find) new in box.    Sold

TANGO ISO LC-10-20  choke. 10H 200mA new in box                            Sold

TANGO  ISO FX-40-5  new in box                                                              $4500/pair

TANGO  FX-40-10  new in box                                                                   $4500/ pair

TANGO  #11792  2K 120W  for parallel push pull 4×6550 etc new in box      $15000/pair

9BA612D5-ED29-429E-9476-4DFDA9A25355 C2D1A9A6-71F3-410D-A8BA-AD808D325374 7279E562-F9FA-4916-A69B-2D2786E9A3A6

TANGO  XE-65-1 , #11250 , #11251 one complete set of used irons for 6C33C push pull stereo power amplifier in very good condition.          $10000/set

EDAB7589-CDD5-488A-A871-6C309E761F34
TANGO  EQ-600P (LRC-TYPE)  best for DIY phono amplifier  used but in very good condition  $6000/pair

IMG_8183

TANGO   MS-UVD 220V  for 845, 211 stereo amp excellent condition      $6500

TANGO  #10697  specially ordered new in box   primary: 0-220V     Secondary : 500-450-0-450-500V 0.26A, 0-6V 6A, 0-6V 6A, 0-6.3V 3A, 0-6.3V 3A, 0-5V 4A  for any suitable tubes    $5000

TANGO  MS-400H NOS with box   primary : 220V secondary:  0-115V-125V 1.4A, 320V 100mA, 70V 100mA, 6.3V 7A, 6.3V 7A, 6.3V 3A    for 6C33C         $3500/pc   2 in stock

Oversea buyers are welcome. $1US= $7.8HK You can pay through PAYPAL. Please contact me at: refaudiohk@gmail.com