•B-350+參考規格

B-350 是Densen 的旗艦後級擴大機，採單聲道設計，是由B-330 立體聲後級升級而來，不過Densen 並未將B-330 的100 瓦輸出誇張地倍增，僅保守地將B-350 的功率增加到125 瓦/8_，從這裡可以感受到Densen 穩健踏實的作風。

B-350 的主要零件均採用表面黏著技術，因此精密度極高。焊錫過程中均使用銀錫，而且是在氮氣的環境中進行焊接，以杜絕氧化的狀況發生。每B-350 使用一顆承載容量為750VA 的電源變壓器，搭配總容值高100,000μf 的濾波電容，可提供充沛穩定的能量。內部所有的電阻採用Vishay 雷射切削的金屬皮膜電阻，誤差小於0.1%，可以提供最為精準的數值。

B-350 同樣搭載Densen 當家的DMCD技術，不使用負迴授，不僅輸出電流大、暫態反應快，還有輸出阻抗極低的好處。另外，B-350 的背板有增益調整的切換開關，因此用家可以不用擔心前級的輸出是否過大或是不足，算是非常貼心且實用的設計。B-350 內部也已經準備好SAXO 電子分音系統的插槽，方便用家直接安裝電子分音模組，並進行分頻設定，就能夠以多擴大機對付難以驅動的喇叭了。

The B-350PLUS is Densen's top of the line power amp. The new B-350PLUS contains a completely new output stage, built using Densen’s unique "DMCD" technology (patent pending). This makes the B-350PLUS extremely fast and precise, while retaining unlimited control of the speakers. The bandwidth has also been improved and the B-350PLUS goes to 400.000Hz, resulting in improved slew-rate and an extremely fast and detailed sound.

The B-350PLUS is built using surface mounting teqniques, and the components are mounted to a precision of 0.02mm using silver solder. All solderings are carried out in an artificial nitrogen atmosphere to avoid oxidation of the solderings. The power supply is massive and consists of a 750VA transformer and has a storage capacity of 100.000uF with 4 seperate rectifiers, 2 of which are capable of 3.000VA. Unusually for an amplifier, not all the capacitors are mounted in a capacitor bank, as some are located next to the output stage for faster power delivery. All resistors are laser-trimmed metalfilm from Vishay with a precision of 0.1%. The B-350PLUS delivers 125W at 8 ohm, and 250W in 4 ohm.

No local or global feedback is one of the key issues with the B-350PLUS. This technology is further improved with Densens new patent pending DMCD (Dense Mass Current Distribution) circuit. By using the DMCD circuit, the current is at all times present at the output terminal. This results in an extremely low output impedance and a truely non-feedback amplifier.

The printed circuit board is made of teflon and is doublesided, allowing the signal to be placed on one side and groundplane on the other, thereby optimising interference free signal transfer.

The B-350PLUS contains several exciting features. On the backpanel there is a switch to adjust the gain, so that the B-350PLUS works perfectly with a traditional preamp, as well as a CD-player with variable output.

There is also a D-Sub15 connector, allowing for DenLink connection to other Densen products, such as auto power on/off.

The B-350PLUS is also prepared for Densen’s SAXO electronic crossover, so that the B-350 can be used in active systems. This is done by mounting the crossover in an internal socket. The SAXO crossover is user adjustable and will fit all speakers on the market.

For all at Densen the birth of the B-350 is a significant moment. At Densen the B-350PLUS has for several years been the internal reference, and therefore it is a pleasure to be able to show audiophiles all over the world the true musical world of Densen.

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