Does the volume control the output of the line levels, as well as the headphone?

Hello, Thank you for contacting Cambridge Audio. The volume control is for headphones only. Thank you and we hope this helps. Best regards, Cambridge Audio

Does this have sufficient gain for a MC cartridge that produces 0.4mV output?

Not sure, I used it in a Audio-Technica AT-LP120-USB that has a AT95E cartridge with an output of 3.5mV @ 1kHz. Later I gave it out to my son using a Rega Planar 1 but don't know what cartridge he is using. Hope this helps. Best, David

Is there a way to turn off or bypass the headphone circuit or amp?

Hello and thank you for your question. The headphone amp on this product is only active when you have headphones plugged in! Otherwise the signal is simply amplified by the preamp stage and sent out through the outputs.

Do i need this if i am running my turntable through a pioneer sx-1280?

Just looking at the face of the Pioneer SX-1280 (Photo on E Bay), there is a Phono 1 button. Usually indicates that there is a built in pre-amp. I would still check that the Phono is operating as this model hasn't been made for a while.

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🎶 Elevate your vinyl ritual with precision and private power.

VINYL MASTERY UNLEASHED - Engineered for flawless MM & MC cartridge compatibility, unlocking every groove's nuance.
COMPACT POWERHOUSE DESIGN - Sleek, lightweight chassis fits seamlessly into any modern audio setup with minimal footprint.
ULTRA LOW NOISE PERFORMANCE - State-of-the-art switch mode power and surface mount tech deliver ultra-low background noise.
PRECISION SOUNDSTAGE CONTROL - Subsonic filter and balance control eliminate vinyl imperfections for crystal-clear audio.
PRIVATE LISTENING REVOLUTION - Integrated 6.35mm headphone amp means premium sound without powering your main amp.

The Cambridge Audio Alva Duo is a high-performance phono preamplifier designed for both moving magnet and moving coil cartridges. Featuring advanced switch mode power supply and surface mount technology, it delivers ultra-low noise and precise sound reproduction. With a built-in headphone amplifier and subsonic filter, it ensures pristine audio quality and private listening convenience in a compact, stylish form factor.

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Compatible Devices	Headphone
Color Name	Silver
Batteries Included	No
Batteries Required	No
Brand	Cambridge Audio(ケンブリッジオーディオ)
Manufacturer	Cambridge Audio
Item Model Number	C11027
Included Components	Alva Duo Moving Coil & Moving Magnetic Phono Preamp, User Manual, Safety Guide, Main Lead
Special Features	Built-in headphone amplifier
Connectivity Technology	RCA
Material	Plastic
Product Dimensions	21.59 x 15.75 x 4.83 cm; 1.86 kg
Item Weight	1.86 kg

Cambridge Audio - Duo MM/MC Phono Preamplifier 141

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