What does this device do?

T8 can compensate for the defects of speakers and sound field by adjusting 7-band high, middle and low frequencies, and modify various sound sources. The timbre and loudness also can be changed to achieve different sound effects.

Can I use RCA and XLR outputs simultaneously?

Yes! Both outputs work concurrently - connect XLR to studio monitors and RCA to a subwoofer simultaneously. Ideal for multi-amp setups without signal degradation. Perfect for A/B testing or expanding your audio chain.

How do I reset EQ frequencies to neutral?

Rotate any band's knob until you feel a tactile pause at the center position (scale line vertical). This zero point means no boost/cut applied. Reset all knobs to center for flat reference response.

What tubes can I upgrade to?

Stock 6H1N-BN tubes support direct swaps with 6N1/6AQ8/ECC85. For 6SN7GT tubes, you MUST use a 6SN7-to-6N1 adapter (not included). Adapter ensures proper pin alignment and voltage safety.

ASIN	B0C5MHZ68Y
Amplifier Type	Tube
Best Sellers Rank	#49,198 in Electronics ( See Top 100 in Electronics ) #32 in Audio Component Preamplifiers
Brand	Douk Audio
Built-In Media	6H1N-BN Tube ×2, DC 12V Power Adapter ×1, T8PRO Preamp ×1, User Manual ×1
Color	Black
Compatible Devices	Active Speakers, Amplifier, CD Player, PC, TV
Connector Type	RCA
Customer Reviews	4.1 out of 5 stars 109 Reviews
Enclosure Material	Metal
Item Dimensions D x W x H	5.04"D x 7.32"W x 1.5"H
Item Weight	1.51 Pounds
Manufacturer	Douk Audio
Material	Metal
Model Name	SUC-T8-PRO-H
Number of Bands	7
Output Channel Quantity	2
Power Source	DC power supply
Product Dimensions	5.04"D x 7.32"W x 1.5"H
Warranty Description	18-Month Warranty

Douk Audio HiFi Vacuum Tube 7-Band EQ Preamp Equalizer XLR Pre-Amplifier Home (T8 PRO)

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