真空管研究

 美國Dynaco Dynakit Stereo 70 Tube Amp  這台也算百大名機之一，原來的電容有些老化。因此老師父有改用其他電容引出。 另外有改前端子加一個VR可以作CD直入。後面的喇叭孔也改過。 交連電容改為史普端的水滴型電容，雖是新品但聲音很對老DYNACO的味道。 外觀雖然差了點，但聲音很棒。不愧是百大名機之一。 標準內部應該是這樣 引用網路上的無名圖片 作為參考 但這台也有些改過。 畢竟這是KIT套件，內部5花8門也是合理的。

 美國 Audio Research SP9 真空管前級   先前購入的SP9 聲音比LS1醇厚 這型有出三代機種。 聲音不錯，怪不得是名機。 The Audio Research SP9 is a classic hybrid, tube/FET stereo preamplifier (introduced ~1987) known for combining tube warmth with solid-state speed, featuring a high-quality MM phono stage, 6 line inputs, and, in later Mk II/III versions, improved power supplies. It uses two 6DJ8/6922 tubes.  Key Specifications (SP9/MkII/MkIII): Frequency Response: 5Hz–50kHz ±0.5dB (Line), 30Hz–40kHz ±0.3dB (Phono). Gain: 21dB (Line), 67dB (Phono). THD+N: < 0.01% at 2V RMS output. Input Impedance: 50k ohms (Line), 47k ohms (Phono, adjustable). Output Impedance: 250 ohms (Main). Signal-to-Noise: 78dB (Phono), >100dB (Line, below 1V). Tubes: (2) 6DJ8/ECC88 (SP9), (2) 6922 (MkII/III). Dimensions/Weight: 19” W x 5.25” H x 10.25” D; ~13 lbs (5.9 kg).  The SP9 is regarded for its excellent soundstage and musicality, with the MkII and MkIII offering refined, quieter performance through updated components and b...

 加拿大  PSB.500 大型書架式喇叭 https://www.hi-av.net/modules/article/view.article.php?260 由 Paul Barton創立的PSB 以聲音中性 正確而聞名， 他的名言：「享受音樂並非有錢人的專利」一語點出PSB品牌的核心理念，相對於眾多貴不可攀的高價Hi-End音響，尤其是打著大師名號大撈特撈的諸多「名廠」，Paul Barton努力地想讓好音響便宜到足以「落入尋常百姓家」，更令人「揪感心」。 Award-Winning PSB 500 Bookshelf Speakers – Made in Canada Experience the legendary “Canadian Sound” with this pristine pair of PSB 500s, a speaker that redefined what a bookshelf monitor could deliver in the early 90s. Designed by the renowned Paul Barton, these substantial stand-mount speakers were a critical darling upon release, taking home the Sound & Vision Critic’s Choice Award in 1993. More recently, they proved their timeless quality by winning the very first Radique Audio “Bookshelf Speaker Showdown” on YouTube, besting a field of worthy competitors with their dynamic, full-range performance. These are not your typical small bookshelf speakers; they are serious full-range monitors. Weighing in at nearly 30 lbs each, they feature robus...

 這是中國的文招音響 12AU7 MOSFET 耳機擴大機 這電路的特點就是用低壓同時推12AU7跟MOSFET且點亮燈絲 推動耳機。 實作來源是這裏 https://diyaudioprojects.com/Solid/12AU7-IRF510-LM317-Headamp/ 引用自上方連結的電路圖

 Audio Refinement Multi 5 五聲道後級擴大機 功能正常出力大，聲音細細致，每聲道都有獨立音量控制 可拿來當立體聲後級，音質棒

 英國製 HARBETH HL COMPACT 7書架喇叭 外觀傷比較多 但無修無改 聲音漂亮的喇叭