Sony ULT Field 5 Wireless Portable Bluetooth Speaker, IP67 Waterproof, Dustproof, and Rustproof with Enhanced Bass, 25 Hour Battery, 360° Party Light, and Shoulder Strap (SRSULT50B), Black
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Description
About this item BEST MIDRANGE BLUETOOTH SPEAKER: CNET Best of 2025. If you don’t take our word for it, trust the experts. ULT BUTTON: Press to boost the bass for a deeper, richer sound. SHOULDER STRAP: Designed for easy portability, making it simple to carry your speaker wherever you go. PARTY CONNECT BUTTON: Link multiple speakers together to create an immersive sound experience across larger areas. IP67 WATERPROOF AND DUSTPROOF: Built to withstand harsh conditions with rugged durability for ultimate protection. UP TO 25 HOURS OF BATTERY LIFE WITH QUICK CHARGING: Enjoy long-lasting playtime with a battery that can keep up with your music sessions. A 10-minute charge gives you up to 2 hrs of playtime, perfect for when you're in a rush. 10-BAND EQUALIZER: Customize your audio experience with the 10-band EQ, allowing you to fine-tune sound for optimal clarity, depth, and balance. AMBIENT LIGHTING: The light perfectly matches the vibe of your music, enhancing the atmosphere with vibrant colors. ENHANCED POWER & SOUND PRESSURE: Delivers powerful, immersive bass and sound pressure for a premium audio experience. 2-WAY ACTIVE DESIGN: Features a dedicated woofer and tweeter for high-quality sound across all frequencies. Show more See more product details
Details
Product information Additional details Audio Output Mode Stereo Mounting Type Free standing Enclosure Material Plastic, Mesh fabric Speaker Type Portable Speaker Additional Features Bass Boost, Built In Microphone, Dustproof, LED Light, Lightweight, Portable, USB Port, Waterproof Antenna Location For Music Players, For Smartphones or Tablets Color Black Is Waterproof True Warranty Type Limited Maximum Range 5 Meters Control Method Touch Speaker Size 46 Millimeters Water Resistance Level Water Resistant EU Spare Part Availability Duration 7 Years Bluetooth Range 30 Meters Specific Uses For Product Party, Travel Battery Average Life 25 Hours Total USB 2.0 Ports 1 Measurements Unit Count 1.0 Count Item Dimensions D x W x H 5"D x 12.6"W x 5.7"H Item Weight 7.31 Pounds Compatibility Compatible Devices MP3 Player, Smartphone Battery details Battery Charge Time 10 minutes Warranty & Support Feedback Item details Brand Sony Model Number SRSULT50B.UC Model Name ULT FIELD 5 Built-In Media Speaker, Strap belt, USB Type-C® Cable Warranty Description 1 year Number of Items 1 UPC 027242931947 Manufacturer Sony Best Sellers Rank #49 in Portable Bluetooth Speakers #1,006 in MP3 & MP4 Player Accessories ASIN B0DY9X655Q Customer Reviews 4.6 out of 5 stars Power Speaker Maximum Output Power 50 Watts Input Voltage 9 Volts Sound Quality Frequency Response 2.4 GHz Number of Audio Channels 2.0 Connectivity Connectivity Technology Bluetooth Wireless Technology Bluetooth Connectivity Protocol Bluetooth Power Source Power Source Battery Powered Number of Batteries 1 9V batteries required. Audio Hardware Audio Driver Type Dynamic Driver
Customer reviews
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Superb high end Bluetooth Speaker!
Excellent!! I am an audiophile! Having said that, I pay attention to all things sound quality related. If you are like me, MP3 files etc don’t cut it. This model was made for the demanding listener. Not all Bluetooth codecs are the same My FiiO M11+ portable player has Ldac and a 3.5 Line output. Both of these feature are able to be utilized on the Sony ult field 5. I play dsd and ripped cd files from my FiiO to the Sony. The sound of the Sony is often described as bass heavy. Nonsense. This speaker on the ult2 setting is rich full and natural. The speaker walks the fine line between just enough bass to sound natural,(bigger drivers) and reasonable Portability. The amplifier has decent power output to get to enthusiastic loudness, but still sounds very natural at modest levels as well, and a substantial sized lithium battery to have long all day listening sessions. Like other reviews have pointed out, the colour changing lights are a surprise. They are not too flashy, or over done. They add to the experience. The carry strap is very well made with the ends being metal and not plastic. The sound quality is very well tuned and musical. It is not boomy overblown bass. If you play lesser quality low bitrate files on a lesser Quality Bluetooth codecs, then perhaps you will have a different sound. But careful examination of this models features and build quality and its weight,(7lbs) will tell you the type of audio quality to expect at high bitrate playback over Ldac Bluetooth or direct line input, which is necessary for excellent sound quality. This is a portable Bluetooth speaker for the discerning listener. Well done Sony!
Excellent!! I am an audiophile! Having said that, I pay attention to all things sound quality related. If you are like me, MP3 files etc don’t cut it. This model was made for the demanding listener. Not all Bluetooth codecs are the same My FiiO M11+ portable player has Ldac and a 3.5 Line output. Both of these feature are able to be utilized on the Sony ult field 5. I play dsd and ripped cd files from my FiiO to the Sony. The sound of the Sony is often described as bass heavy. Nonsense. This speaker on the ult2 setting is rich full and natural. The speaker walks the fine line between just enough bass to sound natural,(bigger drivers) and reasonable Portability. The amplifier has decent power output to get to enthusiastic loudness, but still sounds very natural at modest levels as well, and a substantial sized lithium battery to have long all day listening sessions. Like other reviews have pointed out, the colour changing lights are a surprise. They are not too flashy, or over done. They add to the experience. The carry strap is very well made with the ends being metal and not plastic. The sound quality is very well tuned and musical. It is not boomy overblown bass. If you play lesser quality low bitrate files on a lesser Quality Bluetooth codecs, then perhaps you will have a different sound. But careful examination of this models features and build quality and its weight,(7lbs) will tell you the type of audio quality to expect at high bitrate playback over Ldac Bluetooth or direct line input, which is necessary for excellent sound quality. This is a portable Bluetooth speaker for the discerning listener. Well done Sony!
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Don't Need to be Confused just Buy This
Don't get Confused just buy it, you won't regret. Sound quality is top notch, great clarity for a bluetooth speaker. It supports HIRes bluetooth codec like LDAC not many speakers have these although you need to be a android user. For better experience and comparison i suggest to visit store to experience the by yourself. For portability, it is heavy like 3.3kg but solder strap is given and with solder strap the portability is not an issue. Battery life of this speaker is also good and you can use external power source like ac adaptor also with type c and get extra boost on bass and volume. Party light is also very cool. Overall is a great speaker total value for money in this price, (better sound than JBL xtreme 4). Build quality of this very top notch, have ip67 rating. In the functionality, the Sony's party connect is there if you have Sony's other speakers which have this feature. Can connect two same speakers as in stereo although the speaker it self is stereo. In the back io panel there is also a aux in port for audio and the speaker can be a powerbank to charge your phone. All these things which make this speaker great in functionality. NOTE : In the back I/O panel 3.5mm port was given but sound amplifier doesn't work i.e volume is low compared to bluetooth. Same thing is also applied when you try your custom band eq in sound connect app. Apart from this everything is excellent and i am telling you this after 5 months of usage.
Don't get Confused just buy it, you won't regret. Sound quality is top notch, great clarity for a bluetooth speaker. It supports HIRes bluetooth codec like LDAC not many speakers have these although you need to be a android user. For better experience and comparison i suggest to visit store to experience the by yourself. For portability, it is heavy like 3.3kg but solder strap is given and with solder strap the portability is not an issue. Battery life of this speaker is also good and you can use external power source like ac adaptor also with type c and get extra boost on bass and volume. Party light is also very cool. Overall is a great speaker total value for money in this price, (better sound than JBL xtreme 4). Build quality of this very top notch, have ip67 rating. In the functionality, the Sony's party connect is there if you have Sony's other speakers which have this feature. Can connect two same speakers as in stereo although the speaker it self is stereo. In the back io panel there is also a aux in port for audio and the speaker can be a powerbank to charge your phone. All these things which make this speaker great in functionality. NOTE : In the back I/O panel 3.5mm port was given but sound amplifier doesn't work i.e volume is low compared to bluetooth. Same thing is also applied when you try your custom band eq in sound connect app. Apart from this everything is excellent and i am telling you this after 5 months of usage.
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An amazing speaker, sad to have had to return it
This is an amazing speaker, truly top notch in sound and build quality. It feels heavy, connects quickly as most SONY products do, there's no detail forgotten when it comes to features, yet its simplistic enough to not be overwhelming with options, and the straps to carry around the speaker are not an after thought. All around, a solid speaker that I feel is worth the price I paid (at the time $198, maybe not $350 but definitely $198) With that being said, it is NOT portable, at least for me. It gets heavy pretty quickly if you lug it around, even with the crossbody strap. If you're ok with being unable to grab the speaker and shove it into a bag or suitcase then I would opt for the smaller options for sure. If you frequent outdoor events enough to want a speaker of this physical caliber, or plan on using it as TV sound bar or static speaker system, then I would highly recommend. Over all, solid speaker, emphasis on the SOLID part of the speaker, it feels high quality and over engineered for heavy duty adventure and performance, it is just a big ass speaker that I personally wasn't ready for. I will unfortunately and begrudgingly have to return it, but if I could keep it I would.
This is an amazing speaker, truly top notch in sound and build quality. It feels heavy, connects quickly as most SONY products do, there's no detail forgotten when it comes to features, yet its simplistic enough to not be overwhelming with options, and the straps to carry around the speaker are not an after thought. All around, a solid speaker that I feel is worth the price I paid (at the time $198, maybe not $350 but definitely $198) With that being said, it is NOT portable, at least for me. It gets heavy pretty quickly if you lug it around, even with the crossbody strap. If you're ok with being unable to grab the speaker and shove it into a bag or suitcase then I would opt for the smaller options for sure. If you frequent outdoor events enough to want a speaker of this physical caliber, or plan on using it as TV sound bar or static speaker system, then I would highly recommend. Over all, solid speaker, emphasis on the SOLID part of the speaker, it feels high quality and over engineered for heavy duty adventure and performance, it is just a big ass speaker that I personally wasn't ready for. I will unfortunately and begrudgingly have to return it, but if I could keep it I would.
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Great powerful speaker
I was pleasantly surprised by this speaker. The sound quality is real good for a portable speaker. I’m going to consider it portable because it has a well thought out strap and you can take it places with you. It is kind of heavy and large, but the dimensions are in the product description so nothing that I didn’t already know. The build quality of this speaker is top notch. When you hold it in your hand you feel like you got something for your money. The materials look and feel good, and the bass speakers in the end are well protected and punchy. I use this on a sailboat, pontoon boat, camping trips, and in the backyard. It just works and sounds great everywhere. I have gotten it wet and used it in very dusty environments with no issues. As far as sound goes, I’m not sure you could beat it with a speaker the same size or price. It is crisp and bass sounds good. At 100% volume it gets a little out of control but that is almost every speaker on the market. The battery life is all day with no issues. It has never died and I have used it for 10+ hours straight.
I was pleasantly surprised by this speaker. The sound quality is real good for a portable speaker. I’m going to consider it portable because it has a well thought out strap and you can take it places with you. It is kind of heavy and large, but the dimensions are in the product description so nothing that I didn’t already know. The build quality of this speaker is top notch. When you hold it in your hand you feel like you got something for your money. The materials look and feel good, and the bass speakers in the end are well protected and punchy. I use this on a sailboat, pontoon boat, camping trips, and in the backyard. It just works and sounds great everywhere. I have gotten it wet and used it in very dusty environments with no issues. As far as sound goes, I’m not sure you could beat it with a speaker the same size or price. It is crisp and bass sounds good. At 100% volume it gets a little out of control but that is almost every speaker on the market. The battery life is all day with no issues. It has never died and I have used it for 10+ hours straight.
