Quick answer

The Synergy Gold Portable offers independent vacuum adjustability on each breast with preset cycle levels, making it ideal for moms who need customized pumping. The S2 Plus is a hospital-strength closed-system pump with a single motor and no built-in battery, but it costs significantly less. Choose the Synergy Gold for maximum control and portability; choose the S2 Plus for proven performance on a budget.

Portability and power: what you carry matters

The Synergy Gold Portable weighs only 1.5 lbs and uses a separate battery-operated motor for each breast. That means you can pump both sides with independent settings without being tied to an outlet. The S2 Plus Premier weighs 3 lbs and delivers hospital-strength suction (270 mmHg) but requires a wall outlet — there is no built-in rechargeable battery. If you plan to pump on the go or in different rooms, the Synergy Gold’s lighter weight and battery design give you real freedom. If you always pump near an outlet, the S2 Plus saves money and still provides powerful, quiet pumping.

Adjustability: one size does not fit all

The Synergy Gold Portable lets you adjust vacuum strength independently on each side, with preset cycle levels that remove the need to manually tweak cycle speed. This is a game-changer if your breasts respond differently to suction or if one side is more sensitive. The S2 Plus uses a single motor for both breasts, so vacuum and cycle settings apply equally to both sides. Most moms find the S2 Plus settings perfectly adequate, but those with asymmetrical output or sensitivity will appreciate the Synergy Gold’s independent control.

Synergy Gold vs S2 Plus: trade-offs to consider

  • Weight and portability: Synergy Gold is 1.5 lbs with two separate battery-operated motors. S2 Plus is 3 lbs and requires a wall outlet. Choose Synergy Gold if you move around while pumping; choose S2 Plus if you pump in one spot.
  • Adjustability: Synergy Gold offers independent vacuum per breast with preset cycle levels. S2 Plus applies the same settings to both sides. Synergy Gold is better for asymmetrical milk production or sensitivity. S2 Plus is simpler and still effective.
  • Price: Synergy Gold costs $188.99 (compare at $299.99). S2 Plus costs $106.79 (compare at $177.99). S2 Plus saves over $80 upfront. Synergy Gold adds cost for independent control and battery operation.

Product facts at a glance

  • Synergy Gold® Portable Double Adjustable Electric Breast Pump: The SG Portable features independent vacuum adjustability on each side with preset cycle levels eliminating the need for manual cycle adjustments. The 1.5lbs mini and lightweight SG Portable utilizes one separate battery-operated motor for each breast. You can customize suction for each breast and pump anywhere without an outlet — ideal for moms with different milk flow on each side or those who need true portability.
  • S2 Plus Premier Double Electric Breast Pump: The Spectra S2 Plus double electric breast pump is hospital strength (270 mmHg), ensuring productive single or double pumping sessions. Weighing only 3lbs, the S2 Plus is quiet for optimum privacy. Like all Spectra pumps, the S2 Plus is a true closed system. You get reliable, hospital-grade suction in a quiet, affordable pump. The closed system prevents milk from entering the tubing, keeping your pump hygienic and low-maintenance.

Which pump fits your lifestyle?

Best for

  • Moms who pump in multiple locations and want independent vacuum control per breast
  • Moms with different milk output or sensitivity on each side who need custom settings

Not for

  • Budget-conscious moms who always pump near an outlet and don't need per-side adjustability
  • Moms who prefer a single, straightforward pump without separate motors to manage