does the 32 channel mixer have a talkback input somewhere?

Yes on your master input section on the back of the board has an XLR input labeled “TB”

how many rack spaces?

The Soundcraft GB2R 16 Compact Rack-Mounted 16-Channel Mixer Console requires a minimum of 10U Rack Spaces to have this mounted in a 19" Rack. You may refer to this link for info - https://www.soundcraft.com/en/product_documents/soundcraft-gb2r-td-pdf.

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Soundcraft GB8 48 Professional 48-Channel Mixer Console

Product ID: 11701765

Details

Brand
Soundcraft
Connectivity Technology
Auxiliary
Item Weight
105 pounds
Number of Channels
48
Power Source
Corded

🔌Individually switched 48V phantom power

🎚️48 channels for ultimate control

🎛️8 aux sends, fully switchable

€ 18002.37

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Sold byAmazon SlovakiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎧 Elevate Every Performance — Mix Like a Pro, Sound Like a Legend

PHANTOM POWER ON DEMAND - Individually switched 48V phantom power on every mono input ensures seamless condenser mic integration.
MASTER YOUR MIX WITH 48 CHANNELS - Unrivaled input capacity for complex setups and professional-grade sound control.
PRO GRADE METER BRIDGE OSCILLATOR - Integrated 1kHz oscillator and LED meters emulate classic VU ballistics for precise level monitoring.
FLEXIBLE AUX SENDS FOR PERFECT MONITORING - 8 aux sends, switchable pre/post fader, ideal for live or studio environments.
TAILOR YOUR SOUND WITH GB 30 MIC PREAMPS 4 BAND EQ - Precision tone shaping to make every voice and instrument shine.

The Soundcraft GB8 48-Channel Mixer Console is a professional-grade audio mixing powerhouse designed for venues, churches, and touring systems. Featuring 48 channels with GB30 mic preamps, 4-band EQ, 8 flexible aux sends, and individually switchable 48V phantom power, it offers unparalleled control and sound precision. Its advanced meter bridge and built-in oscillator provide accurate monitoring, making it a trusted choice for demanding live and installed sound applications.

Specifications

ASIN	B00IPQYGFG
Audio Input	XLR
Best Sellers Rank	#264,452 in Musical Instruments ( See Top 100 in Musical Instruments ) #517 in Unpowered Recording Mixers
Brand Name	Soundcraft
Connectivity Technology	Auxiliary
Customer Reviews	5.0 5.0 out of 5 stars (1)
EU Spare Part Availability Duration	5 years
Global Trade Identification Number	00688705209623
Item Type Name	Soundcraft GB8 48 Professional 48-Channel Mixer Console (GB8 48)
Item Weight	105 pounds
Manufacturer	Soundcraft
Manufacturer Part Number	RW5709SM
Model Number	GB8 48
Number of Channels	48
Number of Items	1
Output Connector Type	XLR
Power Source	Corded Electric
UPC	688705209623
Unit Count	1 Count
Warranty Description	Manufacturers limited product warranty for soundcraft products applies only when the purchase is made from soundcraft authorized north american dealers. See soundcraft website for all details.

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TrustScore 4.5 | 7,300+ reviews

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€ 18002.37

Duties & taxes included

In stock

Sold byAmazon SlovakiaDelivered 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 Slovakia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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