What Changes When You Add a Second Person
Most sex machine content assumes solo use. Fair enough — that is how the majority of owners start. But using a HiSmith sex machine for couples changes the equation in ways that matter: positioning gets more complex, attachment choice affects two people instead of one, and the physical setup has to account for someone else being in the space around a moving machine.
The machine itself does not care whether one or two people are present. It thrusts at whatever speed and depth you set. The difference is entirely logistical — where do you put it, what angle works, and how does the partner who is not receiving actually stay involved instead of just watching from the side.
We covered the basic solo-vs-couples decision in our solo vs couples setup guide, but this post goes deeper into the practical specifics: positions, attachment picks, and the accessories that stop couples play from being awkward.
HiSmith Sex Machine Couples Positions That Actually Work
The best sex machine positions for couples are the ones where the receiving partner can be penetrated by the machine while the other partner has physical access for kissing, manual stimulation, or oral. That rules out a surprising number of configurations that look great in theory but leave someone stranded.
Doggy Style — Receiver on All Fours
This is the default for good reason. The receiving partner kneels on all fours, the machine is positioned behind them at thrust height, and the other partner is free to be in front for oral, beside for manual stimulation, or behind with a wand vibrator on the clitoris while the machine handles penetration. Height adjustment matters here — if the machine is even slightly off, the angle puts pressure in the wrong place. The Premium Fucking Machine Lift Platform solves this more reliably than a stack of pillows.
Missionary — Receiver on Their Back
Less intuitive with a machine, but it works. The receiving partner lies on their back with hips elevated on a pillow or the lift platform. The machine approaches from below at a low angle. The second partner can straddle the receiver's face, use their hands, or position themselves alongside. The challenge is getting the thrust angle right without the machine sliding — hard floors are worse for this than carpet.
Side-Lying
Underrated for couples. The receiving partner lies on their side with one leg forward, the machine approaches from behind, and the other partner faces them for full upper-body contact. More intimate than doggy, easier to sustain for longer sessions, and the machine angle is simpler to set because you are working on a horizontal plane. If you are in a small space, we wrote a dedicated guide on machine positions for apartments that covers this in detail.
Seated — Receiver in a Chair
The receiving partner sits on the edge of a sturdy chair or the bed, the machine is positioned between their legs on the floor angled upward. This frees the other partner to stand or kneel in front. Works particularly well when the non-receiving partner wants oral while the receiver is being penetrated — the machine does the thrusting, so nobody has to multitask. Check that your machine's angle adjustment range can handle the upward tilt before committing to this one.
For a full breakdown of every position including solo setups, our complete positions guide covers the lot.
Choosing Attachments for Couples Use
Attachment choice for couples is different from solo because you are often dealing with two sets of preferences, and the receiving partner may be more distracted (in a good way) than they would be alone — meaning comfort and safety margins matter more.
Dildo Attachments — Start Smaller Than You Think
For vaginal use, stick to 5 to 7 inches of insertable length and around 1 to 1.25 inches (2.5 to 3.2 cm) in diameter if either partner is new to machine play. Average vaginal depth runs 10 to 15 cm unaroused and up to about 20 cm fully aroused, so a 6-inch attachment covers most situations safely. Anything labelled 8 inches or longer — like the 10-inch Silicone Aqua Awl Dildo — is for experienced users only and is genuinely not a good starting point regardless of what you are used to with manual toys. A machine controls the thrust, not you, and that changes the depth dynamic significantly.
All KlicLok-compatible silicone attachments require water-based lube. Silicone-based and oil-based lubes degrade silicone material over time, so keep a bottle of water-based on hand and skip everything else. Browse the full range of sex machine accessories to see what is currently in stock.
Stroker Attachments — Including the Male Partner
The Thrusting Male Stroker with suction base, KlicLok compatibility, and app control is one of the more interesting options for couples. It lets a male partner receive from the machine while the other partner is physically present — either providing additional stimulation or controlling the machine speed and patterns via the app. Remote or app-based control adds a power-exchange element that works well for couples who want to play with dominance and control without a lot of gear.
The Suction Cup Adaptor Trick
The 4.5-inch Red Suction Cup Adaptor for KlicLok lets you connect any toy with a suction cup base to a HiSmith machine. That means if one partner already has a favourite strap-on dildo or non-KlicLok toy, you may be able to mount it on the machine without buying a dedicated attachment. Check the base diameter compatibility before assuming it will fit — but this adaptor genuinely expands what is possible without replacing your existing collection.
Setup That Does Not Kill the Mood
Nobody wants to spend twenty minutes fiddling with a machine while their partner waits. Couples setup is about reducing friction — the logistical kind.
Height and Angle Adjustment
The Premium Fucking Machine Lift Platform is the single most useful accessory for couples. It adjusts height and angle so you can match the machine to different positions without improvising with furniture. If you are switching between doggy and missionary in the same session, the platform lets you re-angle in under a minute. Without it, you are restacking pillows and hoping for the best.
Surface and Stability
HiSmith machines generate thrust force. On a hard floor, they can creep forward over time — especially at higher speeds. A non-slip mat underneath solves this. On carpet, stability is better but height is slightly reduced. Plan where the machine sits before you start and give it a test run at the speed you intend to use. Machines are louder on hard surfaces too, so if noise is a factor, carpet or a thick rug helps.
Pre-Session Checklist for Couples
- Attachment locked into KlicLok — give it a firm tug to confirm it is seated
- Machine angle set for your first position (adjust later if switching)
- Water-based lube within arm's reach — not across the room
- Speed controller accessible to both partners, or app connected if using app-controlled attachments
- Towel down — machines with lube get messy
We covered the full installation process in our first-time setup guide if you have not assembled the machine yet.
Keeping Both Partners Involved
The honest issue with sex machines for couples is that one person receives and the other can feel like a bystander. Solving this is less about the machine and more about what else you bring into the session.
A cock ring on the male partner adds sustained stimulation while they focus on the receiving partner. A wand vibrator gives the non-receiving partner something to use on the receiver — or on themselves. For couples who want simultaneous penetration, a double dildo is a separate option entirely, though it is manual rather than machine-driven.
App-controlled attachments shift the dynamic significantly. When one partner controls speed and pattern from their phone while the other receives, you get a power dynamic that does not require any extra hardware. The Thrusting Male Stroker's app control is purpose-built for this — and it works at a distance too, which opens up remote play if that interests you.
What to Avoid
A few common mistakes we see from couples who are new to machine play:
Starting at high speed. Typical HiSmith machines can reach up to 300 strokes per minute. Start at the lowest setting and build up. When you are not the one controlling the thrust with your own body, speed that seems moderate can feel much more intense. This goes double when you are distracted by a partner.
Skipping the angle check. A machine that is slightly off-angle during solo use is a minor annoyance. During couples play — when you are focused on another person — it can cause genuine discomfort before the receiving partner registers what is wrong. Set the angle, test it briefly at low speed, then proceed.
Oversized first attachment. If your partner has never used a machine, do not start them on an 8-inch or larger attachment regardless of what they use manually. The machine controls depth and rhythm, not the user. A 5 to 6 inch attachment with moderate girth is the right call for the first few sessions.
Comparing Setup Approaches for Couples
| Factor | Basic Floor Setup | With Lift Platform |
|---|---|---|
| Position flexibility | Doggy and side-lying work well; missionary and seated require improvisation | All four main positions achievable with quick angle changes |
| Height adjustment | Pillows, towels, or furniture — unstable at higher speeds | Built-in adjustment; stays locked under thrust force |
| Mid-session position changes | 3-5 minutes to reposition and restabilise | Under 1 minute to re-angle |
| Best for | Couples who stick to one position per session | Couples who want variety without interruptions |
Picking the Right HiSmith Machine for Couples
Not every HiSmith model suits couples equally. The key differences are noise, speed control precision, and whether the machine supports app connectivity — all of which matter more with two people than one.
Entry-level HiSmith machines use DC motors. They work, but they are louder and have less granular speed control. If one partner is trying to concentrate on the other while a motor drones at close range, noise becomes a real factor. Premium models with servo motors run quieter and hold consistent speed under load, which translates to more predictable thrust during position changes. Check the individual product page for confirmed motor type before buying — not all models list this clearly in the title. Our complete HiSmith buyer's guide compares the current range in detail.
App-controlled models are a clear advantage for couples. One partner controlling speed and patterns from a phone while the other receives creates a dynamic that manual speed dials cannot replicate. If that appeals to you, filter for models with confirmed app or Bluetooth connectivity in the sex machines collection. HiSmith's official site at hismith.com also lists connectivity specs per model if you want to cross-reference.
Where to Start
If you already own a HiSmith machine and want to adapt it for couples use, the lift platform and a second stimulation toy (wand, cock ring, or stroker) are the highest-impact additions. Browse our sex machine accessories for what is currently available.
If you are buying your first HiSmith sex machine for couples, prioritise a model with variable speed control and ideally app connectivity. Pair it with a mid-range silicone attachment in the 5 to 7 inch range and water-based lube. That setup covers every position in this guide without any of the common beginner mistakes.
We ship from two Australian warehouses with same-day dispatch on most orders, and everything carries a 1-year warranty. If you have questions about which setup suits your situation, reach out at sales@pleasingstrings.com.au.
Frequently Asked Questions
Can two people use a HiSmith sex machine at the same time?
Yes, but not in the way most people picture it. The machine thrusts in one direction with one attachment, so one partner receives while the other participates through positioning, manual stimulation, or oral. Some couples add a second toy like a cock ring or wand vibrator to keep both partners actively involved.
What is the best HiSmith attachment for couples who are new to sex machines?
Start with a silicone dildo in the 5 to 7 inch insertable length range with a diameter around 1 to 1.25 inches. This gives the receiving partner enough to work with without being overwhelming on a machine that controls the thrust depth and speed. The Thrusting Male Stroker with app control is worth considering if a male partner wants to receive as well.
Do I need any extras to use a HiSmith machine as a couple?
The Premium Fucking Machine Lift Platform is the most useful add-on for couples because it lets you adjust the machine angle and height to match different positions without stacking pillows or books. You will also want water-based lube — never silicone-based or oil-based with silicone attachments — and possibly a cock ring or vibrator so the non-receiving partner stays involved.
How loud are HiSmith machines during couples use?
It depends on the model. Entry-level machines with DC motors are noticeably louder, especially at higher speeds. Premium models with servo motors run significantly quieter. Check the product page for confirmed motor type before buying if noise is a concern — and keep in mind that hard floor surfaces amplify vibration more than carpet.
