Best Dialer Software for SDRs (2025): Single vs Power vs Parallel
A practical guide comparing single-line, power, and parallel dialers—plus how AI-enhanced SDR workflows multiply live conversations, booked meetings, and pipeline.
Cold calling is still one of the fastest ways to build pipeline—if your team spends time talking instead of waiting for rings and voicemail.
The right dialer can 5–10× conversations per hour, but the landscape can be confusing: single-line vs power vs parallel, AI assists, spam labeling, local presence, and compliance.
In this guide, we explain each dialer type, share real-world efficiency benchmarks, compare top vendors (including Nooks, Orum, and Koncert), and show how multi-channel outbound and AI SDR workflows raise quality and speed.
If you’re deciding whether to build in-house or outsource, we also cover when it’s smarter to leverage a provider like Outbound Sales Pro that includes parallel dialing, coaching, deliverability, and reporting out of the box.