Is it possible to use two sets of outputs - as in run the XLR outputs to the house PA and run the line outs to a keyboard amp so band can monitor?

Yes, the input signal, regardless of connector used, is present on all outputs. http://artproaudio.com/downloads/specsheets/ss_dti.pdf

does it have a ground "lift" option, switchable?

No "BUT" all outputs are ground isolated from the chassis so a "lift" switch is not necessary when using this.

I want to use my studio monitors with my Macbook Pro. What cable do I need to use to plug this into my laptop?

Hi Jason,I would use an 1/8" to XLR Male Y cable like this:http://www.amazon.com/Hosa-CYX-403M-Stereo-Breakout-Cable/dp/B000068OEP/ref=sr_1_9?m=A3QYKZ7LXW9O3&s=merchant-items&ie=UTF8&qid=1448889739&sr=1-9&keywords=hosa+1%2F8+to+xlrIf this was helpful, please consider purchasing from us. We have them both in stock and ready to ship. - Pixel Pro Audio

My single coil pups are picking up interference (nearby laptop, etc) and causing my amp to hum and click; higher gain makes it worse. will this work?

You need a ground loop isolator. Some are as cheap as $20

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ART DTI Dual Transformer/Isolator Passive Audio Interface

ART DTI Dual Transformer/Isolator Passive Audio Interface

Product ID: 225962731

Details

Brand
ART
Item Weight
0.34 Kilograms
Mounting Type
Surface Mount
Power Source
Corded
Specification Met
UL

🔇Eliminates ground-loop noise

🔗Versatile multi-format I/O

🛡️Rugged anodized aluminum case

€ 216.00

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Description

🎧 Silence the noise, amplify your clarity.

BUILT TO LAST - Rugged anodized aluminum chassis designed for relentless pro use.
WIDE FREQUENCY RANGE - Handles 50 Hz to 50 kHz for pristine, full-spectrum sound.
PURE SIGNAL ISOLATION - Dual transformers cut hum & buzz for crystal-clear audio.
UNIVERSAL COMPATIBILITY - XLR, 1/4-inch, and RCA inputs/outputs fit every setup seamlessly.
PASSIVE POWER ACTIVE PERFORMANCE - No power needed—reliable, noise-free operation anytime.

The ART DTI Dual Transformer/Isolator is a passive audio interface designed to eliminate ground-loop hum by isolating signal grounds with high-quality transformers. Featuring versatile XLR, 1/4-inch, and RCA connections, it fits effortlessly into any professional audio setup. Its rugged anodized aluminum case ensures durability for live, studio, or permanent installations, delivering a clean, neutral sound across a wide frequency range without requiring external power.

Specifications

ASIN	B0009GUOQA
Best Sellers Rank	#22,886 in Musical Instruments ( See Top 100 in Musical Instruments ) #91 in Effects & Signal Processors
Brand Name	ART
Country of Origin	USA
Customer Reviews	4.1 4.1 out of 5 stars (293)
Global Trade Identification Number	00840402016380
Item Type Name	Art Pro Audio DTI - Dual Transformer/Isolator
Item Weight	0.34 Kilograms
Manufacturer	ART APPLIED RESEARCH AND TECHNOLOGY
Maximum Frequency	50 KHz
Minimum Frequency	50 Hz
Model Number	DTI
Mounting Type	Surface Mount
Number of Items	1
Number of Packs	1
Part Number	DTI
Power Source Type	Corded Electric
Specification Met	UL
UPC	840402016380
Unit Count	1.0 Count

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€ 216.00

Duties & taxes included

In stock

Sold byAmazon AustriaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Austria.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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The product quality is outstanding. Exactly what I needed for my work.

1 month ago

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