ORIGINAL AUDIO OPA-5A SE Class A Tube Amplifier / Headphone Amplifier 2x KT88 2x 12AU7

ORIGINAL AUDIO OPA-5A SE Class A Tube Amplifier / Headphone Amplifier 2x KT88 2x 12AU7
Original Audio offers with the OPA-5A a Class A amplifier and headphone amplifier duo, based on a tube architecture offering great musicality and sound richness. It uses two 12AU7 tubes for its preamplifier stage and two KT88 tubes for its Class A amplifier circuit.

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999,00 €tax incl.

832,50 € tax excl.
Including 0,05 € for green tax
This product is discontinued
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Original OPA-5A SE

Class A Tube Amplifier / Headphone Amplifier 2x KT88 2x 12AU7

ORIGINAL AUDIO OPA-5A SE Amplificateur / Amplificateur Casque à Tubes Class A 2x KT88 2x 12AU7

Original Audio offers with the OPA-5A a Class A amplifier and headphone amplifier duo, based on a tube architecture offering great musicality and sound richness. It uses two 12AU7 tubes for its preamplifier stage and two KT88 tubes for its Class A amplifier circuit.

The whole device benefits from a very nice design quality. Its power supply stage includes two EI transformers and a Japanese Z11 transformer, allowing to provide the audio circuits with a clean and stable electrical signal.

For its connectivity, the OPA-5A offers unbalanced stereo RCA and balanced stereo XLR as inputs, but also a Bluetooth wireless connectivity, allowing you to broadcast your music remotely, from your smartphone for example. For the outputs, there are terminals to connect your speakers as well as two headphone outputs, the first one in unbalanced 6.35mm jack and the second one in balanced XLR 4 poles.

Technical characteristics

Specifications
Product typeTube amplifier / headphone amplifier
InputsBluetooth
1x Single-ended RCA stereo
1x Balanced XLR stereo
OutputsSpeaker terminals
1x Single-ended Jack 6.35mm headphone output
1x Balanced XLR 4 headphone output
Tubes2x 12AU7
2x KT88
Output power2x 8W @ 4-8Ω
Headphone output powerBalanced : 2x 4500mW @ 32Ω
Single-ended : 2x 1600mW @ 32Ω
Frequency response20Hz ~ 50kHz (-1.5dB)
THD0.5% (1kHz)
SNR90dB
Input sensitivity350mV
Input impedance100kΩ
Channel balance< 0.5dB
General
Dimensions385 x 290 x 175mm
Weight15kg
 
Data sheet
InputRCA
InputXLR
OutputXLR
OutputSpeaker terminal
OutputJack 6.35mm
ColorBlack
Channel2 (Stereo)
ClassClass A / AB
ClassTube amp
Amplifier chipTube
Power (W)4.5
Power (W)8.0
Remote ControlNo
 
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ORIGINAL AUDIO OPA-5A SE Class A Tube Amplifier / Headphone Amplifier 2x KT88 2x 12AU7
Original Audio offers with the OPA-5A a Class A amplifier and headphone amplifier duo, based on a tube architecture offering great musicality and...

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