產品介紹

主要特色

• 通道 A（真空管 ECC83/12AX7）：擁有 “Heat” 控制，可調整高頻部位增益與壓縮感，讓演奏者依風格靈活調聲：

  • 微調控制 ‘Heat’ 即可獲得不同音色，例如拾音懸浮音攻較溫暖、指彈更具光澤。

• 通道 B（全固態架構）：提供純淨、透明音色，具備 XLR 麥克風輸入與 48V 幻象供電，可搭配麥克風或樂器拾音器使用。

• 混音功能：兩通道可獨立使用，也可以混音，極適合處理複合音源（如拾音器 + 麥克風）。

• 精準 EQ 設計：每通道具備 3 段 EQ（低音、Treble 頻架回饋 + 半參數中頻與頻率選擇），靈活調整自然共鳴與頻率響應。另有反相與抗回授開關輔助排除現場音響問題。

• 內建混響（Reverb）：為音色增添空間感與深度。

• 豐富輸出接口：每通道皆具備獨立 XLR Balanced DI 輸出與 Effects Loop，支持靈活信號路徑與外部效果器連接。

• 手工製造：英國工廠精製，品質與音響表現備受肯定，已為多位知名音樂家投入巡演裝備使用。

規格簡表

• 通道 A（真空管）：

  • 控制：Gain、Heat、Bass、Treble、Mid + Freq 調節

• 通道 B（固態）：

  • 控制：Gain、Bass、Treble、Mid + Freq、+48V Phantom

• 共用功能：

  • Master Reverb／Line Volume／Main Volume

  • Phase Invert 開關、Mute 功能、接地切換（Ground Lift）

• 輸出接口：

  • FX Loop Send／Return（每通道）

  • Line Output（混合輸出）

  • Main Output A & B（獨立 Balanced XLR）

• 尺寸：29 × 15 × 9 cm

• 重量：2.5 kg

Channel A is a unique ECC83/12AX7 valve channel for active and passive instruments. The valve circuitry operates in a totally different way to most electric guitar amplifiers and has been designed to amplify a much wider frequency range in order to capture every subtle nuance of acoustic instruments. The tonal effect of the valve can be fine-tuned with the preamp’s ‘Heat’ control which adds gain in the upper mid range and above, whilst also adding subtle compression. This can be used to revoice this channel depending on the playing style. Backing off the Heat offers a warmer attack for flatpickers, whilst turning it up adds more presence and sparkle for fingerstyle.

The analogue solid state Channel B has a different, slightly softer character with outstanding clarity. This channel has inputs for either a microphone or an instrument, and features switchable 48V phantom power. Both channels can be used independently or blended together – perfect for the modern player who combines multiple sound sources.

Each channel has a three-band EQ with a semi-parametric mid control, plus switches to correct feedback issues on stage and phasing problems between dual-source pickups. The tone shaping options have been voiced to perfectly control the natural body and ‘air’ of acoustic instruments, whilst the onboard stereo reverb adds stunning ambience if desired.

On the rear, the preamp features flexible routing options, including independent effects loops and balanced DI outputs for each channel. Handmade in the UK the Orange Acoustic Pre TC has already been a hit with major artists. Prototypes have already gone straight into the touring rigs of Stevie Wonder for use with his Harpejji and fingerstyle jazz guitarist Martin Taylor MBE.

FEATURES AND FUNCTIONS

Channel A

Gain:  Input level to Channel A
Heat: Varies valve gain in upper frequencies adding harmonics and compression
Bass: Low shelf +/-12 dB below 680 hZ
Treble: High shelf +15 dB Above 680 hZ
Mid: +/-18dB @ frequency selected by Freq control
Freq: Selects centre frequency for Mid control (180Hz – 1.8kHz)

Channel B

Gain: Input level to Channel B
Bass: Low shelf +/-12 dB below 680 hZ
Treble: High shelf +15 dB Above 680 hZ
Mid: +/-18dB @ frequency selected by Freq control
Freq: Selects centre frequency for Mid control (180Hz – 1.8kHz)

Master

Reverb: Controls the level of the on-board digital reverb
Line Volume: Controls the output level of the unbalanced mono line output
Main Volume: Controls the output level of the balanced XLR outputs

Switches

+48V On: Activates 48V phantom power on Channel B’s XLR input
Phase Inv A: Inverts the phase of Channel A
Phase Inv B: Inverts the phase of Channel B
Mute: Mutes both channels at the FX Loop send (Reverb/Delay tails and loop pedals will still be audible)
Gnd Lift A: Lifts the ground of Channel A’s XLR output
Gnd Lift B: Lifts the ground of Channel B’s XLR output XLR

Connections

Input A: 1/4″ Jack input to Channel A
Input B: 1/4″ Jack and XLR inputs to Channel B (not to be used simultaneously)
Mute Footswitch: Allows the mute function to be controlled by a latching footswitch (such as the FS-1)
FX Loop Send A: Connects Channel A to the input of an effects unit. The Send can also be used as an unbalanced output for Channel A (post-EQ, pre-Reverb).
FX Loop Return A: Connects the output of an effects unit to Channel A output
FX Loop Send B: Connects Channel B to the input of an effects unit. The Send can also be used as an unbalanced output for Channel B (post-EQ, pre-Reverb).
FX Loop Return B: Connects the output of an effects unit to Channel B output
Line Output: Mixes both channels for a mono unbalanced 1/4″ output Jack
Main Output A: Individual balanced XLR output for Channel A
Main Output B: Individual balanced XLR output for Channel B
12V DC 2.1mm DC socket for connecting the supplied 12VDC centre negative power supply

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