【前級，後級】Rogue Audio (雀仔) "Metis" 前級，"Medusa" 後級

[Ted Chen]

Rogue Audio "Metis" 前級

















Rogue Audio "Medusa" 後級

[Leo Yeh]

Rogue Audio Metis Magnum
前級內部公開

這台Metis前級也是Magnum的版本，包括更大的電源供應與模組，更大的耦合電容， Cardas配線、更好的電容、電阻、鍍金真空管座...等等
- Larger power supply
- Power supply mods
- Larger coupling capacitors
- Cardas output wiring
- Polypropylene byass capacitors
- Precision Dale-Vishay resistors in critical spots
- HexFred diodes
- Gold tube sockets
- Magnum logo on faceplate



若是有對照原廠官網非Magnum版本的內部圖，就會發現Magnum好很多


















使用兩隻6SN7真空管，原廠外盒有標示那隻要插在前面






還有真空管的保護金屬罩，蠻實用的






前級的遙控器，用來控制音量


Metis有12dB的增益放大，內建的MM唱放為38dB，前方有動差式的耳擴輸出
介面方面，有4組RCA輸入(line 1,2,3與MM唱放)，1組固定的輸出(不受音量控制)、1組受音量控制的輸出
完全在美國設計與生產

General Features and Specifications:
- 20Hz-30KHz bandwidth
- Slow start turn on sequencing
- 12 dB gain line stage
- Ultra accurate 38dB gain phono
- Discrete headphone amplifiery
- Massive high storage linear power supply
- (2) 6SN7 tubes
- Gold plated RCA inputs
- Machined aluminum faceplate
- 4 inputs (phono, line 1,2,3)
- 1 pair fixed outputs
- 1 pair variable outputs
- All precision components
- Heavy (2 ounce) copper circuit board
- Fully tested, burned-in, and auditioned
- Detachable IEC power cord
- 18" W x 12.5"D X 4.5" H, 16 LB (22LB shipping weight)
- power requirements: 120V or 230V - 50/60Hz
- Entirely designed and hand built in the USA

[Leo Yeh]

Rogue Audio Medusa
後級內部公開

Medusa是D類晶體與真空管混合的後級，有著真空管豐富的音樂性及晶體的動態。Medusa的設計不是單純的直接在D類放大前加上真空管線路，使用的是Rogue Audio獨家的tubeD™線路架構，實際將兩者結合在一起。待機時晶體放大部份仍有提供電力，真空管則是較緩慢的啟用，以保護真空管。Medusa輸出功率為200W(8 Ohms), 400W (4 Ohms)。

打開內部就可看到兩顆一大一小的環型變壓器




這兩片應該是客訂的荷蘭Hypex D類晶體放大的模組，左、右聲道各一組




真空管放大部份，採用兩隻ECC802 S，與12AU7可替換




充足的電容群


具有RCA與XLR輸入各一組


General Features:
- Large high performance torodal transformers
- Massive linear power supplies
- Balanced (XLR) and single ended (RCA) inputs
- Heavy-duty gold plated binding posts
- Two 12AU7 tube complement
- Short circuit protection
- Standby circuitry for solid state components
- Slow start circuit for extended tube life
- Machined aluminum faceplate
- Heavy (2 ounce) copper circuit board
- All precision components
- Fully tested, burned in, and auditioned

Specifications:
- Output power Medusa: 200/400 WPC 8/4 Ohms
- Input impedance: 200K Ohms
- frequency response: 10Hz - 20KHz ± 1dB
- THD: <0.1% typ., <1.0% at rated power
- input sensitivity: 1.0V RMS
- dimensions: 18" W x 15" D x 5.5" H
- weight: Medusa 38 lbs
- power requirements: 115/230V - 50/60Hz

[Leo Yeh]

[Leo Yeh]

突然發現，Rogue Audio的老鷹標記，香港就稱這品牌為"雀仔"

[jlee]

真空管放大加 class D 功率輸出級，很有趣的組合。